I would recommend this item to a friend.
Good filter for the price.
January 24, 2013
I've been using these sponge filters for a few years now in my smaller tanks (5-20 gallons) and I am pretty impressed. They keep the tank water clear as long as there isn't any driftwood, as well as doing a wonderful job of breaking down harmful ammonia in the tank. It doesn't do any good at removing tannins from the water if you are using driftwood, but that doesn't bother me since tannins are slightly beneficial. They do lack chemical filtration, so that's the only negative, but at approx. $7 per filter, I can deal with that. If you have lots of smaller tanks then these filters are great, but I wouldn't use them on anything larger than a 20 gallon personally.
Pros:Cheap Effective Doesn't suck up fry Easy to clean Helps oxygenate the water
Cons:No chemical filtration Requires air pump