A person who knows what he's talking about. Most aquarium edutubers just give instructions, but not explain the science behind it. This is a good channel. Subscribing...

Hi Kev the bog filter is still going strong almost 2years now and have nearly 30 koi and 2 sturgeon and never have a issue was the best decision I ever made and watching you videos on how to construct one was so easy 👍 good to see your at nearly 50k in subs 👍

I was skeptical when I saw the headline that this was going to be an ad. But instead it was excellent advice. Thank you!

I swapped the sponges in my filter barrel for 3 sizes of rocks and I'm absolutely amazed at how clear the water is now. I first found one of your video's a couple of years ago so it took me a while but worked a treat. Thanks Kev.

Very clear way to explain what aquarium gear sellers try to NEVER explain to people. thank you for sharing!

This popped up in my feed, so thought I'd have a squint at it. Glad I did, as I've learnt something new. I live in a tenement building, in a city, however, if I ever win the lottery I'll buy somewhere out in the country and create a crystal clear pond, now I have the knowhow. 😂😂😂 Thanks for uploading!

Thank you so much, Kev. I’ve just discovered you & although I have a small pond system, it wasn’t working well. I’ve been scratching to find a solution Brilliant, now I know which way to go. So grateful for your generous sharing of I formation. Torquay/Vic.

There's a large run-off pond on my parents' property, and duckweed takes over every year. I hope to manage it a bit this year, and finding your video was very helpful.

Thanks matey. Clear, concise and with the ability to diy. Very much appreciated.❤

Your videos are always helpful and simple to understand and makes total sense especially in these often complicated times we live in these days

I am planning to make a pond for my 3 year old, thinking of making 2 parts one for 5-6 fishes and another for him to play inside , thank you for all your support ❤

Thanks great info I had never heard before. Usually it is someone showing you what you need to buy.

Glad I found your channel mate. Thanks for shaping

I'm glad I found your channel years ago. The detailed breakdowns and instructions were super helpful. I was able to build a bog filter in 2021 that was 6feet x 3feet and 3 feet deep. It flows out through a wide stream and is an absolute powerhouse of a filter that I only need to clean out twice a year. My pond water is always crystal clear, all the fish are healthier, and tons of native frogs populate the bog during springtime and breed in its shallow waters.

Thank you. It is such a wonderful video and your pond is truly so clear! I don’t have a pond and I wasn’t even interested but YT recommended your video. I’m happy I watched it. Your voice and explanations were so clear and soothing as well. One day if I have a chance to build a pond, I’ll do what you said here. Thank you again.

Having a bog filter for 1 year now and wow, just amazed by results. I have around 10 koi and now the water is crystal clear, I'm still amazed. I used to clean the barrel filter ever 2 weeks and never had water quality even close to what it is now, hell I could barely see my koi.

Thanks Kev , another great video . I really appreciate your diagrams of the bog filters. 😊❤ Your fish are very sweet.

Commenting so the matrix puts the video infront of more people, superb video as always chap. Soon I will have all the fittings to make my mk2 bog filter, my test bog filter made the world of difference - thanks to you and your channel.

your pond is stunning

Instant subscription! Thank you so much for this (and I'm assuming all your other videos too). This is exactly what I've been looking for. I'm so happy I found you!

Excellent video and the pond water looks amazing! Thank you

Great Video on easy ways to create a clear pond. Thank you for sharing

Another awesome update. Thanks Kev. ❤

Very helpful..thank you from the green mountains!

This is beautiful! Amazing pond

This is an amazing channel as is your web site - full of information, suggestions, guides. Thank you very much.

Thank you for sharing your knowledge.

Excellent well explained video. Thanks from the very wet Lake District in England.

So beautiful.❤ My cat likes listening to these videos 😄

That's gold information here, thanks!

I love looking at your creations. Thanks again. Now I'm off to tap the thumbs up 👍 button to feed the algorithm monsters.

Great job sir. I just followed ur instruction and made one, I will know tomorrow how well it works.

Why would anyone dislike this video ? The information, like with all your videos, is excellent. Clearly rivals are jealous 🤣

I think of the bog filter as part of the pond. Yours are just as lovely as the pond itself, and that is my goal - to make my bog filter a beautiful functional plant growing part of the pond. I'm trying out a couple different plants this year, I've got hydrocotyle tripartita, bacopa, water sprite, and rotala. I hope the hydrocotyle will take off and shade the top of the bog a little, plus it is so interesting to look at. I haven't had much luck with water sprite in the bog, but it grows like crazy in baskets in the pond, maybe I will have better luck with it this year.

Just found your channel. Excellent. With love from Kerala, India.

Thanks, I've heard of Zeolite before, never knew how it was used.

That was easy to understand and I am going to give it a go… thankyou for your help.

Hi Ozpond! I've been using this same concept to clean grey water from homes! Loving nature

Very well explained, I have a Aquaponic greenhouse I built a fluidized sand bed to give nitrifying bacteria a home, it works great. I think I will set up a bog filter for my pond soon, Thanks for your informative video, cheers 🍻

Thanks for the post my smurfy friend!

You're my first subscribe ever! Live in the Mojave Desert, gonna make this happen! I'm so excited!👍😆

I have been saved by small stock in my ponds. Just as you said, the water was always crystal clear. This worked with my old 5m x 4m x1m large backyard pond to my new 3m x 1m x .4m one. My small pond has no mechanical agitation but a healthy ratio of surface area compared to depth, and a couple of hand fulls of frog friendly fish with plenty of plants and snails have produced the same results. Next to no maintenance and beautiful water quality. Love it ✅️

Lovely information.

very helpful thank you. Building my first pond as I type

Awesome thank you great teaching information greatly appreciated thank you

Thank you for your clear and considered explanation. I am wondering how big my bog filter needs to be, to help make my dam water clear. 😂

awesome video!!

There is another way to have clear water I use. I go to local stream which is overflowing with invasive pond weed, pull out large amounts and throw them in water and they filter it. These need to be changed once pond gets cloudy. Your way is by far superior though.

Kev this was an excellent explanation of the nitrogen cycle. No math to scare off new-be's. They can delve into the math once they get the concept. Again, well done.

Great stuff!

great vid mate thanks, very informative UK

I built an awesome bog filter after watching ozponds.....

It would have been an idea to show how to make one!

Brilliant!

Thank you.

Bravo. So great to learn there is a solution against having a scum pond.

Nice one 👍🏼

Thank You.

Brilliant buddy

Love this

Kev is a pond legend

Thank you

My bog filter has canna lilies but the problem is the rooting system is very invasive thereby restricting upward flow from the manifold piping. Still working but flow is bit slower

nice video keep them coming

There is an area of my local park where water always ends up. I want to take a mattock to it and maybe make it into a natural pond? How do you avoid pond liners? It might be just a seasonal pond?

Have you ever explored any Viktor Schauberger inspired water restructuring devices? Truly miraculous results.

I used to use mechanical filters and the water was always green. I switched to a Bog filter years ago. Crystal clear water ever since

Great advice... how do bog filters work where it freezes in the winter where we have to shut pumps off ?

I think I’ll be making one of these this year. I want a mini waterfall anyway.

Fascinating. I wish I had some Australian property to try it out on! I'm guessing you are not in a major city.

I like too know more about ponds we have a small pond in our yard and it's ugly because of the pond LG be great for fish but we have a lot of frogs in the pond just like too now what I can do to get it clear pond instead of it being gross and green

Hi Kev. Great videos. I have a solar pump, like most, and was wondering if this is enough to provide enough water for a bog filter? The pond is quite small, I'm not great at DIY which is why I've been looking at those ceramic pot filters with charcoal etc....the ones made quite easily, but a bog filter and the idea of the beneficial bacteria really appeals to me. Thanks 👍🏼

Great quality! What about posphates?

Thank you for your tips. Was also wondering what plants to go for; given that the filters top area will be a feature to enjoy. I was going to try to keep it uncomplicated or natural and have two Iris with a little cress in patches. I know the Iris will do well in a clay soil, but will the clay be a bad idea for the top. Of course I have to leave open shingle? I was also wanting to pump the water from the bottom of a "Skimmer" yet that will have to somehow dictate the water level. I think that I will have to raise the bog up a little, so that it can run back to the pond. Will the filter work better with less pressure and if so, should I use a smaller pump from the pond directly. Then have the main pump at the bottom of the skimmer run water to the waterfall and stream? What do you think? p.s. Oh one last Q. Do you think a wall/barrier made of cement blocks, maybe home made ones, then rendered with strong cement will be waterproof enough?

5:38 i made something similar with 5 gallon bucket of lava rock (for a small pond), works great. no flush valve necessary. who would have thought keeping the water crystal clear is so easy? no need for expensive filter media or a UV filter. thanks kev.

Gday Kev, great videos I've just subbbed to your channel, quick question I'm up in central qld coast, planning a rather large stone waterfall with multiple cascades and small pocket pools on the way down with plantings of water based plants along the entire length (3-4mts) do you see any issues with me using a concrete and lime based mortar for my stonework for the bulk of my construction, will the lime in the mortar affect the water ph much ? I will have a liner in the large fish pond at the bottom with a sump and looking at a 100lt bog pond 1.5mts off the ground as the head waters of the falls. Any thoughts on this, I'm looking at a 6-8 month build with approx 4+ tonne of rock conservatively

Oh I would love to try this on our dam … would you be able to turn on and off the filter? Say over a hot dry summer. Would the big filter come back to life or just become a sludge pit. I suspect the latter. Just worried that there may be too much evaporation at some points of the year.

Looks beautiful, and nice & simple. Can this be scaled up for a farm dam at all?

Try some limestone. It raises the pH and helps sedimentation.

Hello, Kev. I have been wanting to build a water feature for a while now and may be able to do this in the near future. I live in Texas and during the summers, I definitely would have to top it off occasionally. I would probably have to create a drum container to mix the water. My biggest question is about all the leaves that would certainly accumulate. I keep planted fish tanks and use natural things in them,but certainly not a bottom full of leaves! And suggestions as to where to find information on building a small pond right the first time would be appreciated. Thanks.

Is it possible to set up a reasonable bog filter or bio filter fir an above ground pond?

Hi Kevin, can you show us your filter and how you make it, thanks you kev

Hi! Can you please let me know how much the pond costs to maintain, like electric and water bills.

can we switch of the pump of bog filter for some 5 to 6 hours in a day or it must run 24 hours please do reply

I have used straw in aquarium to reduce growth of algea. Have you tried that and if so, what was your oppinion about it?

How often should I flush out or clean the bog filter?

Will a bog filter prevent string algae? I can't seem to get rid of the algae in my water feature after trying numerous algaecides.

So you don’t need any kind of bacteria starter kit to kick it off? And can it be used to clear a pond that’s already very green?

How do I keep the pump in the pond that feeds the biological filter from clogging up with dirt?

I'm battling cloudy green water now😫. it's just so cloudy. It was crystal clear last week. It's getting really hot here in AZ now. So I'm hoping it's just trying to balance itself out.

Hello how large of a bog filter would I need for 2. 300 gallon tanks that have ducks swimming in them?

Does having freshwater clams helps you clear the water ?? Is it sustainable??

So the bacteria will grow automatically in the pog filter or do we have to do something?

I have a small outside pond plastic one that you get at the store, but my water is green and I have a small filter in it. Can you help me tell me what to do? It looks like algae and I have goldfish in it.

Any rule of thumb regarding volume ratio of filter to pond?

It's safe for swimming or not? If we use submersible pump it can be dangerous... Tq

You have an idea for reef tank?

Will this work for a pasture pond

My biggest question, what happens when the liner gets puncture or old?

Do legumes grow on these bog filters?