filter bags

200 micron used, bleached clean ready to go! Will ship for $10.00 Pick-up Gurnee IL 60031

Hi So I adopted an established reef tank a few months back. I managed to get on top of an aiptasia issue in the display tank... But recently noticed there are a few in the back chamber on one of the filter media bags. I'm worried if I remove it I'm gonna remove the beneficial bacteria. But if...