eatsomepopcorn
Aquarium Advice Freak
I have heard people refer to spone filters in a canister as a nitrate factory. Can someone explain that and also give some advice related to when I clean my fluval 405 sponges every 4-6 weeks, should I freshwater clean (spray out) one or more of the 4 sponges or just rinse out as best I can in a bucket of saltwater from the tank as I have been doing. I have a 44g saltwater FOWLR.