I have a cartage filter with carbon. I just bought AquaClear 70 Foam Filter Inserts, Aquarium Filter Replacement Media, 3-Pack, A1396 .
Do I change right away to the sponge, or do I keep my cartage in, and then add the sponge? and if so, for how long?
Do I change right away to the sponge, or do I keep my cartage in, and then add the sponge? and if so, for how long?