Switching out the canister

[MarkoD]

Originally Posted by nanomano

nicely said! when I top of my cichlids weekly, I take the foam out of my filters and rinse the crap out until the water is clear, this can take a few minutes sometimes.

You're not suppose to wash out freshwater sponges. You're basically killing all the bacteria

Since there's no live rock in a freshwater tank, the sponge is the primary biological filtration.