Proper cleaning of Eheim Canister?
Hey folks -
I have an Eheim 2215 that I am going to clean for the first time. Can someone help me out with instructions on the proper way to do this?
Should I clean out the sponge layers?
Should I scrub the rocks/tubes?
Do I need to keep any parts submersed?
I basically do not want to destroy the "good" bacteria that has grown to eat the Ammonia - but I do want to clean the filter.