I run 2 tunze streams in my 90g. I think they are 6100's. On a multicontroller with the pulse setting.
plus 2 seio's (620 and 820) and the return pump is a mak4...
Of course, I have only acro's and no sand....
but in my 120g, I had nearly the same setup, except two return pumps and 4 maxijets, the two tunze with 5" of sand and some other corals like frogspawn, etc in the tank. No seio's on the 120g though.
I had a small problem with the sand getting moved around on the first day. by the second, no probs at all.
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