Mine came with the black ones

Beautiful tank! I just got the 250 so appreciate the video

Thanks for the tutorial, it went flawlessly after watching your video.

Excellent post! I've just bought one of these to replace a sunsun 3000 from finest-filters via amazon which failed in service after only 8 months. I am currently in dispute over refund ... ignoring ruined cabinet and ceiling below. So fat I am massively impressed by the Oase.

Thus filter has an air bubble problem. Isn’t the fine sponge making more air bubbles? I just removed all the pre filter sponges and the tube to check if will make a difference.

Does the plastic transparency degrade over the years? Does it become opaque? Updates?

I remember my fx4 loosing flow after a week. eheim classic floss is different, can last 6 month and no flow difference.

what are the dimensions of the sponges themselves? I'm looking for a 20ppi or 10ppi equivalent

Thank you pleasantly and easily explained to us who need a little reassurance 😀

Hi, This is the perfect video I was looking for because I just bought 250 themo.● At the end, do you turn the heater on at the same time as powerhead? Reason for asking cause I saw on a forum someone said they fused their trays together. I'm guessing he didn't let filter fill up with water before hand. So what stage do I turn heater on? thanks.

Thank you!! Yeah I don't like opening my oase filter up either to change the filter floss as I had mostly biological Filtration in the basket so definitely gonna get some of these black 60ppi sponges 😊

Great video. I have been spilling a lot of water doing the pre filters . That will all stop now.

You obviously don't know about this filter anything! First of all, you didn't see how MECHANICAL module with filter-floss like you say, attached to the pump head. Go, take a look and you will notice there's perfectly matching rings on both, pump head and mechanical module (or even plastic basket for filter media like you said). So that's made with purpose - for strict water direction trough the filter itself. Your modification with sponges without mechanical module WONT WORK! I tried this and you obviously didn't. Why? Because when you attach filter plastic body to pump head without mechanical module water will mostly be pulled into filter in that crack between filter body and pump head and something like 30-40% of water flow will go DIRECTLY FROM TANK to the PUMP HEAD and WILL DO NOTHING! Also, you didn't say anything about tank capacity when you used this filer, but you say it's clogged in a week, right? I'll tell you that a bit larger version of this filter (XL corner filter) can do great job for 30L cube. Just use 1 mechanical module + 1 plastic basket module filled with media (of course mechanical goes down and basket with media up, closer to pump head). You can also attach external extension and fill it with Dennerle filter bio media (or anything tiny as well, let's say Sera siporex mini) which is additional media for beneficial bacteria. And it won't be clogged due to very low water flow though that extension. With this setup and regular maintenance your mechanical module will last at least TWO or THREE MONTHS instead a WEEK like you said, in 30L planted cube with proper amount of fish. That's a big difference right? If you want to judge about anything, please don't just spit on it because you don't know how it works. However, I can agree with you, replacing a module costs, but 1 module / 2-3 month its not so expensive compared to many other filters where you have separate cartridges which are way expensive. Also, like some other peeps said, you can cut your own filter floss and just replace it... way cheaper but I doubt you can find 3-stage density filter floss so easy. Conclusion: this filter can run very good for a long time (2-3 years), just have to know how it works, and how to improve it in order to reduce replacement of mechanical module and filter bio medium. Best luck!

Brilliant video, just bought the 350 yesterday, thanks for showing us this

Same trouble here , the filtration is good bud indeed expensive to renew every time. I go look for a new pump

Mate, I just use the regular foam prefilter sponge, then after a few months, I switch to medium fine filter floss. Every 2 months, I just throw away the filter floss and do it all over again.

Whenever I clean the prefilter and restart the filter, dirty water starts gushing out of the outflow for a few seconds. Can anyone pls explain why is this happening?

I have five of them and my biggest problem is the suction cups dont hold to the tank well

Excellent video

Was looking for an honest review on this product. Thank you for sharing this with us. Still struggling to zero down on an internal filter for a planted 50 gallon tank with medium stocking. Whats your take on the Oase bioplus? It doesnt have the central holes in each compartment, wonder why 🤔 Also, do you recommend biomedia to go at the bottom to start off or a coarse sponge or a combination? An honest review with comparisons on the Oase internal filter is much needed. I am not either fully convinced with the Fluval or Aqqa. Have a nice day!

They have done a great job at everything, then went short on the heating! My 350 is really struggling to keep up with my 340l aquarium. TBH the room is relatively cold, and it's an open top, so maybe it's the worst case scenario. It seems plain silly to put a 200 W heater in a filter designed for a 350 L aquarium!

What’s the red plant by the rock?

I have a well planted 65 gallon tank with 6 Congo Tetras, 6 Odessa Barbs, 6 black neons, 3 black mollies. Cleanup crew of Cory’s, Kuhlis, panda Garra, Oto’s. Tank has been up for almost 2 years. Have a oase 600 bio master therno. What ppi do you recommend? I also have a Course sponge on the filter intake to keep out leaves.

The higher the number for the pre filter, the more Porous it is. The red is 30 ppi which is the least Porous which traps the most debris. The blue is 45 ppi and the black is 60 ppi. I use the 60 ppi. I have found the 30 and 45 clog up in a week or less. The 60 can go two weeks. I also have a sponge filter on my intake rod that is 60 ppi.

Is it a known mod for these to drill in bigger holes in the pipe in the prefliter and fit the orange sponges instead of the blue ones that come with the filter?

Hello bro thank you for awesome review of filter

Can anyone help me, when I reattach and lock the hose attachments in water starts gushing out of the whole pump. I’ve made sure both the canister and hose attachments are locked in but no help

You can turn down the flow on that filter or just get neo reducer. I don't know what the thinking was behind the skimmer. so i also got eheim skimmer.

Hello friend, maybe this video will give you an idea for yours trimmings and the use of the skimmer, collecting everything that floats on the surface in your maintenance. Greetings kzfaq.info/get/bejne/iLtka91kps-xeoU.htmlsi=OeNypgrk5QFdnOBK

Hello How is the filter over the years? Not broken?

Best video about this filter so far

Good video. I'm cycling my aquarium without any livestock and I noticed that the flow decreased drastically after a few weeks. I don't have the money to replace a cartridge every week. It's also just very unethical. Our hobby is supposed to recreate nature, not create massive heaps of garbage every week. Very disappointed in this product.

Hello, what would you use in a marine set up? Thanks

Hello, what type of sponge is that please? Is is tm30? Teh blue one. And the black? Thank you

Thank you! I was away to purchase the dennerle for my 70l dennerle scapers tank that I am currently scaping and I am so glad I saw this. I have decided to get the 450-CIF. ✌️➕💙4️⃣🐠

Thanks for the clear explanation. What is your experience with the sound the biomaster makes? I know someone who took out all the sponges to make it quieter. I have a eheim that hums and am thinking of buying the oasis because of the convenience. But to end up with annoying noise again is a bit stupid

How often should you change the sponges for new ones awesome information thanks myn runs my 6 foot saltwater tank does awesome job

When I do all that myn rattles and it's a nightmare to get it started again I dread when I have to clean myn out

Great video and very helpful. Don't do what I did when swapping the ceramic diffuser for a new one - when I flipped the old one out (trying carefully not to touch it) it came out with the top seal still attached (which I didn't notice) so that when I put the new ceramic piece in, there was no upper seal and the CO2 just made its way straight up the filter pipe! Solved after much head-scratching when i looked down at the old ceramic piece in a bucket :) A couple of related points that might help based on questions I've asked CO2 art. Apparently , it makes no difference which way round the diffuser is mounted - there is no 'up'. The diagram on the packaging show the CO2 inflow at the end nearest the tank - which I follow. I've also seen pictures with the installation the other way round. I also asked them about a CO2 'mist' in the tank and if there is any optimisation that can be done to eliminate it - it was suggested to put the diffuser before the filter. Not tried this.

thanks! this finally made everything click. it's so obvious once you explained it.

How do you open the glass bit to get the ceramic out? Mine is stuck.

Thank you for explaining in detail how to not flood the cabinet after cleaning the prefilter and how to properly prime the pump. I have struggled with this one aspect of the biomaster for 3 years!!! I like your suggestion of popping a drink while getting the remaining bubbles out😂

Hi. Can you advise. My Oase 350 water flow is now getting slower. I do cleaning every 10-14 days. Any reasons why slow flow of water?

what kind of light is that?

My heater is stuck in and I can’t turn unscrew it cos it’s stuck it’s self to the inners

There is water leaking from the little O' ring where I attach the Co2 tubing to the Bubble counter. It's brand new. It's a steady leak any suggestions? It's coming from the hole not the O' ring

Very interesting thanks for sharing it 😊

hello!I replaced the inside of the filter with small rings (bio media) which you can buy from dennerle .Do you think its gonna be fine ? i am a begginer and i have 30lt aquarium... thank you!

Oase actually has 4 types of pre-filter, coarse orange, blue medium, black fine, and black with carbon.

Mime works fine with a 40l. I've bought an extension to it that basically has the bottom part filter and the upper part for bio media. The filter is supposed to be changed every 4 to 6 weeks but I guess it depends on how much livestock you have. I have 4 Amanos, 2 CPO and 6 nano fishes.