Gas Exchange in FO

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.

 

i have a similar setup with same filter and skimmer
and have no dramas with oxygen
my tank is 3 foot long though u should be ok id say
my ehiem exit tube is under water too
water agitation will only stress yer coral if yer coral is placed wrong i generally aim my power heads and filter exit pipe along the top of the tank aimed out of the way of the corals they seem to de doing fine

-jamie

 

Thanks Jamie! However, I'm currently running this as a FO tank. Will it still be ok?

 

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....8)

 

Get a dissolved 0'2 test kit.. Thats the best way to know or start up a dedicated 0'2 reactor.