700 gallons and 500 fish? yikes!
how much air do you have going in?
how big are these fish? and yeah, you need gobs of filtration..
what kind of turnover in the tank? (how often does the volume of tankwater turnover?
with that many fish, i'd have pure o2 injection..
i have a 700 gallon tank (or so) and would be pushing it to capacity with 200 adult fish..
oh, and do you have some kind of backup power?
