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Originally Posted by Dark Helion  Good day! I have a 5'x3'x1.5' predator tank (6 7"-groupers) with an Eheim canister and a Jebo venturi skimmer. Is the gas exchange from the skimmer's vortex chamber enough for the fish's O2 needs, or do I have to elevate the Eheim's return pipe above water level for additional surface agitation/gas exchange? I'm worried about stress from too much water turbulence, and of course, salt creep.  |
The o2 level should be fine.....that many groupers with a measley ehiem is asking for trouble. With a tank like that you should have a couple filters that are rated 2x's the size of your tank. Or just do bi-monthly 30% water changes....
