Nice info! I never would have considered the siphon issue with a power outage; super important reminder!

Thanks you so much for the knowledge and help me getting my pond crystal clear. That Bog Filter is amazing. Thank you for what you do for all of us. Aloha! Blessings to you, and be safe. Vern

Diagrammatic representation is excellent for understanding 👏 👌

Hi Kev! Thank you so much for teaching me all about what I need to do to get my pond crystal clear. I built a bog filter according to your ideas...and my pond cleared up in 5 days! I am a believer and wanted to thank you so much for all your info. I am grateful =D

Wetland filtration best explanation out there. Building my pond as we speak. Thank you

An extremely helpful video, especially about the hole at the top to prevent a siphon.

Absolutely gorgeous Pond. I agree with you. It does the same thing as a Wetland Filter. 👍😊❤️

Your pond is absolutely beautiful, my dream pond! Thank you for the informative video.

super detailed and educational, as well as some beautiful ponds u have there. 10/10

Hey mate, your knowledge and instructions are second to none… well done.

Hey OZ ponds. What a God send to find your library of pond and filter approaches. I have been googling things like bio filter and plant pond filter. Very happy to find your labors! I am in Thailand so hope to show the villagers how to have a clean pond.

Thank you for this! My pond is much better now!🐠

I'm just at the final stages of building my pond. I wish I had seen your channel BEFORE now!

Great video, informative and concise, thanks

thank you so much for sharing your knowledge. Beautiful ponds . 🥰

I have to say this is the most informative and relaxing channel I've found on keeping eco in ponds here on youtube. I seriously love learning about how to do all this. I am making a pond next month. So excited to try some of these methods. Thank you so much. I subbed yesterday. God bless you brother xxoo

Thank you for your idea. I used your model and my pond went from green monster to crystal clear within 3 days.

Awesome sir Great explanation not to fast but not slow either The drawings help alot

Hi Kev great timing just about to start on my bog filter in the next week or so just buying all the bits to get started now winter is nearly over 👍

Been wanting to make a swimming pond, so this video was God sent

Thanks for a very informative video. I have a small patio pond (132 gals) with a bio-filter and 2 barrel veggie filters. As my fish grew I needed to increase my filtration. Last summer I added an under gravel series of PVC pipe for more bacteria to grow. I pull the water down through the gravel that covers the PVC pipes then back up into my veggie filters. After watching your video I am going to change to a 55 gallon barrel (or 2) for my veggies filters next year. I lost an old koi from a power outage and my pond syphoned dry. I learned a sad lesson. I now have check valves on all my water lines. Thanks again. Love your ponds!

Thank you Kevin. Your videos are a mine of information... I will keep viewing all your videos and taking notes. I am thinking about what we want to build and you are helping me realize what I am (& not) capable of doing ;o)

Hi Kev great informative videos I modeled my bog after your sugestions and have beenpleased with the results

thankyou so much for all ur info i installed a bog onto my pond and lo and behold no more single cell algae and water is crystal clear!!!!

Thanks Bro. I will try it out this spring.

so psyched to build one of these! I just finished building my main pond, and I'm glad I found your channel BEFORE finishing the rest. Now I can incorporate the filter into my pond pretty seamlessly rather than trying to shoehorn it in...

Thanks kev I am planning a large swimming pond (with fish) project that will utilize rain water from my roof with DIY bog filters along the pathway and solar powered pumps to corculate the accumulated water back up through the bog on sunny days.. its a big project but excited to see it all come together..thanks again for your knowledge sharing.. i am looking at many designes and plans before making my own system..

Mega helpful video 🙏🏻

I love your work. And how seemly is easy for you to show us the how's and why's. Cheers

Thanks so much for your knowledge ❤

Thank you. Much appreciated information

Thanks for everything you gave us in this video and your DIY ideas. I was happy to see a fellow "use what you've got" type mentality among all of the "how to pond " sites that use the brand name/high $ products. It was bad enough buying the liners. As far as "follow these steps and you'll have crystal clear water every time" - I have to say Not Every Time. I've been doing ponds for several years and currently been working on my bog filter for two years. I haven't had even partly clear water yet. I have one pond flowing into another (approx 1200 gals and 1500 gals respectively) - the first has been reduced to half bog filter and half left to flow into the second pond. Lots of rock and gravel in the bog but only a 1200 gph pump for the 600 gals of bog. I live in the desert, full sun, and probably not enough plants in the bog right now. I'm hoping that as the plants develop and a second pump dedicated to the bog flow, the filter will be able to clean up the water. I have also added bio-media to the inflow barrel of the bog. I have a solids filter barrel and will probably add another barrel for a moving bio-media tank. I love the challenge of building ponds with generic products and seeing good results - I'm sure I will get back to a successful, clear, and healthy pond before the summer season ends. Thanks again for your time making these videos.

Great video

I have already completed half the construction for a grey water cleaning system . But this is very useful and still time to integrate.

Tyler Jordan Alex - Great Video to start your understanding of pond life.

thanks

Thanks!

I think you have got it figured out. Totally love all your bog filter pond systems.

Oh my Gosh, thank you thank you thank you! We are starting our swimming pond after years of wanting to. We let our small plaster pool go years ago with mesqito fish (basically a swamp) because chlorinated pools are not environmentally sound (as you know). I purchased the bad ass 30 ml. liner and felt last year and have been hand collecting rock. Though I know it can be done the bog filter has stalled my confidence even though I have latitude (books). Not any more though. I most definitely will be back and with pen and paper... and husband! 😂 🙏🙏🙏

I have a 30k litre pond, fed up of green water and not able to see my fish. I decided to fill it in but one last shot post into a UK Facebook group before I filled it in. Due to the size of my pond, the members suggested a large bog filter. Your name and channel came up numerous times so here I am watching from the UK. I no longer wish to fill in my pond! I’m going to design a bog filter thanks to your video. Great channel bro, I’ll be sure to watch them all. Wish me luck!

I put your video in my watch later file.....but I hit the like button already because I know I will fr👍👍👍🤭🤭😎🛐✝️🐣🍟🐧🌵

Your idea for a bog filter is absolutely amazing! We’re planning on implementing a bog filter for our new duck pond, but after using the calculations you gave in the building tutorial vs in this video we’ve come to a bit of a problem. Using the calculations in the other video we came to the conclusion a 1000l pump would be sufficient for a 250l pond, but after watching this video a 1500l pump would be necessary. I’d love to hear your opinion on what would be the best course of action in this scenario!:)

can be used in akvariums too, false bottom and ex airlift that create a slow flow and anoxic conditions just give it time iron fertilizer help it to start work

dear kev wow awesome I was wondering how far down the inlet pipe should the hose from the pump go down the bog all the way or only some of the way ,?you have helped me so much cheers

Alternately you can make a filter using a 55 gallon water barrel with pea gravel or lava rock and sand. This can also be hooked up to a rain gutter. Very cheap very effective.

Hi Kev! I’m really enjoying your videos. Is there a specific type of porous rock that you prefer?

Love your videos. We dug a small pond last year - no fish - we are trying to attract dragonflies. We live in the northern hemisphere where it freezes in winter. How do you handle bog filter in winter? Turn off pump and drain it? I would love to bury a 55 gal barrel so it’s hidden but then can’t have a lower drain outlet. Been binge watching your big videos all night - my guess is you don’t have freezing winters down there?

Great idea on having the skimmer and bog within the EPDM pond liner to prevent leak potential. How do you rout the bog clean out at the bottom if the filter is within the liner and the valve is at the bottom?

Hi Kev :) Loving your channel mate. I definitely want to hear more about running a higher level pump through/over as a stream (mentioned at 5 min mark) and really hope you make a vid on that topic soon. That would mean it was the only filter/pump yes? Putting in an 800, want to put one of the bog filters on and trying to work out the best way to do it. A 250 bog should make it a reasonably stable size for goldfish I'm hoping :)

Hi kev, wonderful video as always. I learned a lot from watching your video as well as reading from your website. Just one question stuck in my mind, do you need to have a separate solid filter when you have a bog filter in place? Especially when dealing with ponds with lots of fish in it.

Start to put into place building a wild life pond in our front yard food forest and your videos pop back up with a mountain of information. I might have a place for a bog filter, and wanted to try a "flood plane" as the upper pond. Be cool if a I can find a variable pump that can cycle between volume.

Omg can we talk about the moss tho! its so amazing. Do you have any tips to get your moss looking so amazing?

Hey kev- thank you so much for these videos! We're putting in a pond at the moment and the information is fantastic. We're very interested in this bog filter and I just want to ask you how big do I need to make it if my pond volume is about 30,000 gallons? I'm looking at that olive barrel thinking I'm going to need something WAY bigger than that! So my question is how much bigger? According to your formula, it wants to be 10% the volume of the pond itself, which in my case would dictate a 3,000 gallon bag. Is that possible in a contained environment? What kind of pump would I need to make that viable? Thanks

Hi Kev, when making your ponds and calculating water volume do you take into consideration the weight of the rocks?

Still totally enjoying your video's! This question pops up: would I need a bog filter if I make a 25 m long stream? It's going to be about 30-40 cm wide. about 20 m of the length is made of rock and pebbles and the pond (6000 ltr) too.

Great Channel Kev ! Love your work ! Just a question tho ; if I was to design a bog or a barrel filter ; am I able to use Sandstone as oppose to bush rock ?

Just the episode I need! I commented before on the chlorine levels in my pond and it was due to me having cleaned the pond just before the test, hope that it condenses out properly. One question though, do you also have a smaller design?

Very nice, thank you for sharing the knowledge! One question, would this kind of filter be suitable for a turtle pond? I know turtles are way messier than fish, so would this filter handle cleaning the water?

Awesome video! Do you need a syphon break if you have your inlet drilled thru the bottom of the bog (basically at the same level as your clean out valve)?

I built a bog filter with the help of your idea. Loving it! But I have never ending mosquitos nesting in it. Any advise?

Gday Kev, love your videos- so informative! am embarking on my second creek/pond and this time going to put in a bog filter. Does it need to have continuous water flow or can I turn it off overnight? Was only planning on running 1 pump (I know you recommend a separate one) to circulate through the bog filter and also return the water to the head of the creek?

Great video. If the bog is made just using pond liner (in sunken dirt) do we need a clean out valve? Thanks

Hi Kev, totally agree with bogs and mine worked amazingly until I did my back 7 years ago and couldn't remove excess plants. The fish population increased from about 20 fish to over 300 that summer because the babies could hide in the mess. I have the bog about 3rd size of the pond and a bio filter too which also worked brilliantly until this summer. The fish got big, some over 30cms. I can't cull them, I don't know who I should murder, lots of them have names and some are over 17 years old. Any ideas? I thought about adding an intake bay but would need an excavator as we are all rock here. The free rock was great but digging next to an established pond scares me and there's not much room. I'd like another pond but that won't go down well with the other half. Water changes and splosht is keeping the water within parameters but not for much longer as the fish get bigger. They are eating all the plants now too.

Hi Kev, can u explain in details how to stop siphoning our water from blog and getting it dried.? I did not understand it clearly where I need to put the hole? To have air rushing and stopping water from siphoning out..

Hi Kev, i'm about to start digging my wildlife pond mostly for birds and a couple goldfish later on. I´m gonna do an undergravel grid attached to an Airlift. The Grid under gravel will have some sort of "diy aquablox" to protect the pipes from getting clogged. My idea is that the bottom of the pond is somewhat a BOG filter... Do you think that this type of idea might need a real bog filter? The pond will be about 2x3m (6mts2) and 1meter in the deepest area. Could i send you a drawing to explain it better so you get the whole picture.

Great, looks good. Qik question, I have 4 bogs for my 4 connected water bodies. One of the bogs are basically 2m wide but 14m long, how would you evenly disperse the upward movement of water?

Great Job !! I bought a home with a pond(man made) It has no circulation and it is green on top can't see in water at all. I'm putting a waterfall in. Any suggestions to clear the green bacteria?

Hi, Kev, will it be a problem to use a solar powered pump, so flow would only run during the day? I live in Hawaii, so it's almost always sunny... but I don't want to run an extension cord from my house to the pumps in my yard. Thank you for your videos. I can't believe you don't have more subscribers... youtube algorithm not doing it's job.

Hello Kev. I just found your channel today and I am interested to your opinion. I am looking to do a pond as a natural holding tank for the rain water and my grey water to be used for watering vegetables garden and the swimming pool... Can a bog filter will work with the small amount of nutrients? Does your system have a musquitos problème ? I see the bog filter as a decorative features in my yard. What do you think of this application? Thank you for you help.

I have an idea to pump the water up to the little hill that surrounds the pond then create a bog filter channel/artificial stream which does a few switchbacks down the hill then goes back to the pond. Any feedback on this idea? Its a pretty big pond so I figure I need max surface area.

Hi. I have a pond with about 17,000 liters and no fish. How small can the bogfilter be? Thx for really great videos. :)

Hi Kev, love all your vids! Learning so much!! Just wondering to choose the correct pump size, you say empty bog size x 6, my bog is 500L so i should be getting a 3000L pump? Just wondering if you need to worry about distance away from the pond the bog sits? Mine is 2metres away do i need to size bigger for pump for distance away from pond or 3000L still enough? Thanks!

Hi from Spain, thanks a lot for all your videos. I have a cuestion, I´m gonna do a 5x4x1m pond with more or less 10.000L. I´m going to use your instructions for the bog filter. So i will need a 3,333L bog filter, i will use 4000L and i need a 24000L/H pump??? is not too much L/H? thanks and keep going with the videos they are great!!

Thank you very much for your videos! Please, so if my hose from the pump coming into the filter is 1/2 inch, I can still use 1 inch for all the filter pipes like you do in the video right? Then I just put the hose from the pump into the bigger pvc pipe from the filter and all goes well right? Haha sorry i am still a little bit confused, and about to start my build. Thanks again

Hi Kev is it possible to use a layer of river sand in the bog filter to trap finer particles or will it compromise flow rate, I was thinking about layering sand between two courses of 9.5mm gravel

Hey keV. Please how to direct the excess water flow? 5:20 ? Do you have a video about the topic? Thanks.

One thing I've discovered that I hadn't thought about; A single outlet from the filter, back into the pond, makes a much nicer sound for several small outlets. The noise you get from several small outlets, makes me need to pee 🤣

Interesting video Still working on digging out garden fish pond. I have 4 good sized raised beds approx 90’ long The pond is between 80,000 and 100,000 litres depending on how deep I go. Thinking how can I use the center of the beds as the bog. Also incorporating the water flow in the overall watering of the gardens.

Hello, thanks to your videos I have built a simple bog filter though I have another problem with floating debris falling into the pond. Do you happen to have a design integrating both a bog filter and a skimmer using one submersible pump?

Can the inlet for the water go directly into the bog container through the bottom side instead of over the top then down?

Thanks very much for this. One challenge we have - each spring we have a lot of toads spawn in our goldfish pond and most inevitably get sucked into the pump and into our sponge/UV filter. About half survive and we transfer them to a different pond to continue their growth process. We love the idea of a bog filter, but it looks as if in our situation the tadpoles would all be delivered into the bottom of the bog filter where they could get trapped - or am I missing something? Any ideas you have to help us solve this problem would be great. Thanks!

Could i possibly use the aquarium filters using materials such as fiberglass hollow perbleles and carbon, in addition to this in order to accieve an even better effect? And one more question. How hygienic safe will be for a person to swimm in it? Just in case. I wouldnt like to use the usual pool chemicals if possible. Can i have the same result?

Hi Kev i am big fan of your videos and has helped me a lot. I have a 3500 g pond constructed with stone and cement with concrete flooring. And we have a fish load of about 20. Due to space constraint i cannot have the bog outside the pond so can i have it inside the pond and lesser in size than 10% recommended ? Please advice Instead of a barrel can i use a rectangular tank which i can keep outside the pond ?

Curious if when filling a bog filter if I can use batting in addition to lava rock or other rocks? Also what about using sand ? So I was thinking large rocks, stacked to smaller, then a layer of batting and maybe the sand on the very top. Wasn't sure if that would function correctly though. I'm asking because I already have these materials on hand. And if I can use sand does the type matter? Play sand or construction sand?

Hello Kev, how many inches of rock/gravel do you recommend?

I am looking to make one in Southern Wisconsin, how to I decide and find what plants to use?

Hi Kev, I am creating a 350 liter indoor pond. My idea is to use a small child’s pool. Do you see any problem with that? I love the idea of a bog filter.

Does it have to be above the pond? I need to make one for a pre-formed pond, and I was thinking of doing it more horizontally. I have to drill holes in the side of the liner, for bulkheads to pass through, so I don't want to be messing around with the pipe work too much. I was thinking of digging space for the bog next to the existing pond, down to a depth of maybe a foot. Then lining it with flexible liner, drilling a 30mm hole through the preform, a foot below the surface, and using a bulkhead to pass a PVC pipe through the rigid and flexible liners. Then at the other end of the bog, I'd make a sump to put the pump in, to pump the water back into the pond nearer the surface, back through the flexible and rigid liners. That way, I can keep everything at ground level, and the only pipe work can be straight. But every other bog filter i see people making, seemes to be elevated above the pond. The only problem I see with the way I'm planning on doing it, is that the sump might run dry if the water doesn't move through the filter fast enough, but it makes more sense to me to have the pump in the cleanest possible water. Am I missing something?

Does it matter where in the pond the pump is? Could you place it in the opposite end of the waterfall.. like the way you would in an fish tank. Or does it become negligible after a few turn overs?

Hello. Do you use pvc or vinyl to connect the pump to the bog input? thanks

Hi Kev, I'm interested in trying one of these on my pond. Is there a maximum depth of gravel to use? I already use a 200l barrel but use filter materials in it, which I have to replace. Rocks and stones are a much better idea.

Do you have a resource or recommendation on an option other than AquaBlox and the Snorkel system by Aquascape?

Hi, so could I pump water from the intake bay together with water from the "sump" deep down of swim zone, into bog?

If you live in an area with clay dirt, and have 1 duck, would the dirt and mud clog the bog filter?

A few comments on what I'm doing on a similar project and some ideas I've found on how to expand this idea. What he built here is called an 'Aquaponics' system, the fish drop fecal matter and pee in the water which provides the minerals/nutrients the plants need with the help of the bacteria (see below). A perfect symbiotic system. It works better if there is rough (3/8" gravel) in the area the plants roots grow into. That way the Bacteria can grow on the rocks and stay bio available to the plants. This process is called Nitrification (see reference below). I am building a 26' Dome Green House on my property in August 2022, and will have several Aquaponics setups in it along with normal organic soil beds. I will grow lots of different edible plants, including vines on raised lattices, cucumbers, beans etc. and a few fruit trees as the dome height will be 16'. The Dome will also have a pond with waterfall for a great place to relax, especially in the winter, as it will be like summer inside. I will have an air cooling system by running a tunnel under the dome to pull air through, thus cooling the air to regulate temperature inside the growing area. One thing that can also be done in soil, to make it much more fertile, is mixing hard wood charcoal, chipped up into the soil at a 15% ratio Biochar to Soil. That creates a home for the mycorrhizae fungi that makes the soil more fertile. That system was first known to be developed in the Amazon jungle by burning plants to clear jungle for growing food. The Biochar was then called Terra Preta and makes plants grow faster, bigger and produce much more fruit/vegetables. My plan is to have plenty of organic food for the family as well as enough to sell to organic restaurants, that way I can write off all the expenses. I will also have a large pond on the property with a bio area (place for water plants, some edible) will grow and when I pump water from the pond into the bio area the water will be filtered by the plants roots and cleansed by the bacteria. All totally organic, no chemicals. I'll have Bass, Crappie, Perch and Catfish in my pond for food we eat. I will have a cable running over the pond with a feeder so I can set it up to be easily fillable and a motor to spread the food pellets on the pond. The pond will also have spawning areas for the fish to keep the pond in balance. With the clean water the pond will also have a sectioned off area for swimming. Most people use Tilapia in Aquaponics systems for that very reason. The Tilapia is a great food fish. Some people create a food trap to let the fly's lay eggs that turn into larvae and then those can be fed to the fish. I have seen a few examples where the table scraps are tossed into a 4" deep tray/bucket, and the flies lay eggs in the food. The larvae crawl up an escape ramp (a bit rough for traction) the ramp goes up, then down. The down side is smooth so the larvae then slide down into a collection jar. Free food for the fish... I will make a video once I get all that up and running. I also will be 'trellising' my fruit trees in another area, similar to grapes, by tying limbs on the fruit trees to heavy wires to run horizontal instead of growing high. That way the fruit is easy to pick because the trees will be wide not tall. The trick is to run the trellis' north/south so the trees fruit will get even sun east/west and have the best flavors... But that's another story. References: www.theaquaponicsource.com/what-is-aquaponics/ and mycorrhizae.com/how-it-works/ and en.wikipedia.org/wiki/Terra_preta en.wikipedia.org/wiki/Nitrification For more information on the Bog Filter Nitrification check out this video that discusses that issue: kzfaq.info/get/bejne/acqPl9thqdjSYGg.html ll also have a large pond on the property with a bio area (place for water plants, some edible) will grow and when I pump water from the pond into the bio area the water will be filtered by the plants roots and cleansed by the bacteria. All totally organic, no chemicals. I'll have Bass, Crappie, Perch and Catfish in my pond for food we eat. I will have a cable running over the pond with a feeder so I can set it up to be easily fillable and a motor to spread the food pellets on the pond. The pond will also have spawning areas for the fish to keep the pond in balance. With the clean water the pond will also have a sectioned off area for swimming. Most people use Tilapia in Aquaponics systems for that very reason. The Tilapia is a great food fish. Some people create a food trap to let the fly's lay eggs that turn into larvae and then those can be fed to the fish. I have seen a few examples where the table scraps are tossed into a 4" deep tray/bucket, and the flies lay eggs in the food. The larvae crawl up an escape ramp (a bit rough for traction) the ramp goes up, then down. The down side is smooth so the larvae then slide down into a collection jar. Free food for the fish... I will make a video once I get all that up and running. I also will be 'trellising' my fruit trees in another area, similar to grapes, by tying limbs on the fruit trees to heavy wires to run horizontal instead of growing high. That way the fruit is easy to pick because the trees will be wide not tall. The trick is to run the trellis' north/south so the trees fruit will get even sun east/west and have the best flavors... But that's another story. References: www.theaquaponicsource.com/what-is-aquaponics/ and mycorrhizae.com/how-it-works/ and en.wikipedia.org/wiki/Terra_preta en.wikipedia.org/wiki/Nitrification

Hi Kev! Can a bog filter clear up green water or should I clean it out first ?

What about for people in very cold climates? Won't all the plastic pipes freeze and crack?

It would be good to hear more on why you think bottom up flow works better than top down... because, from what I've seen, top down flow filters never need cleaning out.

How do you calculate the amount of water through the regulator valve?. My waterfall is 30 inches wide 900 gph is what's needed for my bog according to your calculations.

Thanks for your video , I have a question. I don’t have electricity outside ! I live in an apartment. I’m making a pond in a barrel, how can I filter the water ? Thanks again .