Hello. First time on this site. So I'm looking for a new sponge filter. I have a 100 gal aquarium with a 12in Oscar, it's my first fish and I got him about 2 years ago. He is very messy and destructive as most Oscars are. Anyways I got a canister filter on his tank and I like to also throw a sponge filter in his tank since he is a pig and helps with no film devolping at the surface of water. So the problem I'm having is he destroys every sponge filter I put in there. Rips it to shreds within 2 weeks and I'm constantly having to replace it. I really like having an extra filter in his tank because I do notice a big difference with water quality. I'm wondering if anyone has had this issue and/or knows a tough sponge filter that will last or at least last longer. I just hate having to throw out these filters with so much beneficial bacteria, and I hate coming home from work with pieces of sponge floating around his tank.