08-02-2007, 10:21 PM
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A 30g tank may be ok for a grow-out tank, but the best size for a GOOD mbuna tank is 125g-135g. Something in the lines of 5-6 feet long.
I have kept African cichlids for many years and have found that by jamming the tank beyond the normal realm of theory that aggression is less than when abiding by the "rules". I jam the tank beyond normal accepted boundries and filter it VERY heavily. I currently have a 300g Malawian tank that must have around 300+ fish in it. It is filtered with (4) Marineland 1140 powerheads over a undergravel filter, (2) Magnum 350 canister filters, (2) Emperor 400's, and (2) Fluval 4+ internal power filters. Substrate is Eco-complete Cichlid Gravel and the Magnums have a crushed coral added to their media containers. Decorations consist of lace rock to form caves and hiding places for the fish.