ducati1212
New member
I want to leave my skimmer off for 24 hours to let a biological additive work. I have a single 30 gal with no sump or overflow. My skimmer is a aquac remora hang on so it has the return as a waterfall back to the tank. I am assuming that helps add oxigen to the system. without that running will the tank oxigen levels be ok for 24 hours?? I have 2 powerheads moving water around