aquadude
New Member
Hi. I have a tetra whisper power filter 30 in my 29 gallon tank, which is currently close to being finished with the nitrogen cycle. I've read a lot of different things about when and how to change the filter bag or clean it, but I'm a little scared to do so because I heard you can erase your nitrogen cycle by doing so. Can anyone tell me the proper way to clean this filter, or how often to change the filter bag without destroying the beneficial bacteria that have developed in it? Thanks