Tank has been up for 2 years now, Ive reprogramed the lights there on 8 hours now. I do 20% PWC
every few days. I only feed about every 3 days. Alternating between flakes and brine shrimp. I took back 4 fish, so my bioload is way down. I just cant find the source of my problem! I would hate to have this come back every month!!