Finest-Filters Air Driven Double Sponge Filter for Aquarium Fish Tank Bio-Sponge Filter Discus

Great filter. Came with 2 spare filter sponges, nice surprise. The bio ball areas are also great since you can keep lots of the good bacteria back when you need to cold wash the filter...You can alternately fill the transparent cavity’s with active carbon pellets or larger aggregate. Good size for medium to large tank, small tank it will be quite large in there. Makes water Cristal. If you buy one. You will want another.(Con+fix) The connectors in the piping could be a bit more tight. (If you are to move the filter around underwater while the exit pipe is attached to the glass by suction. The L joints can wiggle loose a bit too easily. Fix: don’t move the unit underwater by grabbing the sponge filter. Only use the stem/exit pipe to which the rubber suckers attach.) Would buy again! 2 more please!

Efficient and a good size. Sits well in the small tank we have. The water clarity is excellent since using this and it has a very simple and easy to fit.

Good little filter all round, and does what it should.

Can't complain at all for 7quid. Having 3d printer I just designed pod for my media on CAD and 2h later had 9quid filter selling for 20. Happy days

This product is well made and I cannot understand the negative reviews given by some customers. I bought it to resolve a problem with an airstone in my small garden pond which I installed to oxygenate my pond in hot weather. The uplift from the airstone raised fine silt from the bottom of the pond and deposited it on the plants which, apart from being unsightly, would damage them. The sponge intake filters avoid this problem and there is now a filtered and aerated outflow from above the surface. Cleaning is easy as the sponges simply slide off the water intake spindles.

First class product

The filter was bought for a small tank and was bigger than expected. Using a Stanley knife it was possible to cut is down to size easily.

I've put this in a 65ltr tank with shrimp and a few very small fish. I wasn't expecting much from a sponge filter which was why I bought the double sponge and it was just safer for the baby shrimp (replaced a powered internal box filter), but the volume of water moved through this is surprising based on just an airline. It would benefit from a spray bar but with the out-put breaking the surface anyway it aerates the tank too. I'll probably make one later. Reviewed at two weeks use, can't comment on cleaning. I change the water 10% each week so not too much build up on sponges to clean off. Would buy another.