UPETTOOLS Aquarium Biochemical Sponge Filter（15-50Gla）, Ultra Quite Aquarium Air Pump Double Head Bio Sponge Fish Tank Foam Filter

This is a fantastic product.Does it’s very well.only set back is you need to order the air pump separately.I paid the same amount of the pump for import and delivery. But worth every penny!

Well made, Mechanical sponge and biological ceramic filtration. Recommend for use in smaller tanks or large bowls with a few small fish. You need to add an air pump obviously. Clever design.

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Nice and delivery is up to date

This filter comes with no instructions. It's obviously easy to put together and install, however, there's nothing about prepping ahead of time. I rinsed everything well and installed it, and within two days two snails were dead and the fish were dying. The fish are now in a sick tank but it's questionable whether they are going to survive. What I recommend is setting this filter up in a container of water separate from the aquarium, and letting it run for at least several days. Maybe even try water changes during that time, to make sure the pellets, sponge, etc. have no chemicals or dust or something similar, before placing in your fish environment. Not sure if that will help, but it's certainly better than installing it and losing your fish.

This filter is superb, it worked immediately right in-front of my eyes. Within minutes the water was very clear and the sponges very dark. the good thing is all I had to do was remove them, rinse them off with water only and put them back. I strongly recommend these filters. I would advice anyone to buy the coloured ones instead of the black ones because you will actually see when they need to be washed because the colour will get darker.

really like this filter. very quiet as advertised. easy to install

I'm new to sponge filters, so still observing and learning. I like to try out different types of filtration. But leaning more towards sponge filtration.I purchased this originally for a small 5 gallon tank, but ended up adding to my overstocked 20L community Guppy tank. The sponge filter I originally used support the tank (different brand) I found could not handle the load. So, I added this filter to the tank and it's made a world of difference. On a tank with with the proper amount of fish, I believe this filter could support the tank on it's own.I like the fact that this filter comes with chambers to allow for other media. Be advised, they are small chambers, but I have added floss in the past and it worked great. I plan on purchasing a second one for a 5 gallon Marineland tank that had an awful built in overflow filter that I just recently removed.I also also use two different size airline tubing in my tanks. I found the 3/16 inch works well with this filter. I'm using a Whisper (100) with two 4-way air flow control lever valves connected to it. This is more than enough air flow to support two sponge filters in the 20L, as well as several small 5 gallon tanks.

We have bought 2 of the singal sponge filters so far. Plan on buying more in the near future. We live the design of these. The only downside in my opinion is the ceramic balls. They seem to choke up the water flow quite a bit. Going to get something else soon and will try to report back. Currently we have the horizontal single sponge version in our 10 gallon and a vertical single sponge in our 5.5 gallon quarantine tank. What I would like to see change is the ceramic balls to something else and better description. Currently all versions are suggested for no more than 20 gallons. I will suggest you get a quality air pump. They will work with a weaker pump, but it will chug. PS, sorry for the poor photo quality.