O OldSalty AC Members Sep 15, 2006 8 0 0 Oct 15, 2006 #11 Just made one more 75% water change. Ammonia level is now down to .0 and nitrate 0. Question how often should I change the filter cartridge media in my bio filter. (not the wheel)????
Just made one more 75% water change. Ammonia level is now down to .0 and nitrate 0. Question how often should I change the filter cartridge media in my bio filter. (not the wheel)????
