brucewrs
Member
Do you clean under the bio balls at all?I have a pro clear 400 gallon and was looking under the bio balls and it was pretty bad.I even have a feather duster growing under there.I was thinking about cleaning out my sump but dont know if I should suck up all of the gunk.That gunk might be good???My nitrates are a little high but I have 0 nitrites.