Here are my personal pros and cons on filters I have used. All filters have aplace depending on the tank size, substratum, type and size of fish of fish, plants, room and looks. I have used or am using sponge filters, undergravel filters, power filters, in tank filters and canister filters.
SPONGE FILTERS: I have not had good luck with sponge filters because they get clogged to fast for my tanks. I have to clean them daily. I fell that they might be good for tanks of 10 gals. or less.Read more