lol
i think ther can be to much filtration... you dont need the whole back glass of your tank covered with sponge filters... that is kindof excessive to me... the best combo (i think) is a main filter like a canister/wet-dry/power that has a rating at least 5 ghallons above the tank volume, an undergravel filter, and if you really need it, an internal filter to aid your main one, like a sponge filter or a small internal filter. just make sure the water isnt getting ripped into a whole bunch of directions
i think ther can be to much filtration... you dont need the whole back glass of your tank covered with sponge filters... that is kindof excessive to me... the best combo (i think) is a main filter like a canister/wet-dry/power that has a rating at least 5 ghallons above the tank volume, an undergravel filter, and if you really need it, an internal filter to aid your main one, like a sponge filter or a small internal filter. just make sure the water isnt getting ripped into a whole bunch of directions