I built my own wet/dry its a 30 gallon tank with a mag drive 24. filtering a 150 gallon tank and the pic of the stuff that is in question is under the mass amount of pot scrubbies and bio balls next to my heaters.
My Ammonia and nitrites are at 0 and my nitrates have always been below 20.
Is this stuff bad should i tear down the filter and vac it out?
My Ammonia and nitrites are at 0 and my nitrates have always been below 20.
Is this stuff bad should i tear down the filter and vac it out?