90 gal reef

No, that is too much flow, 2 6000's at most but I need more info about what you are keeping and the type of sand bed.
 
The Streams will do best if you just use a bed of coarse sand or go bare bottom since the high flow can make a mess of fine sand. The 6000's will be fine provided you aren''t intending to keep a lot of elegance, frogspawn, hammers or torches, you can have a couple and carefully place them but they will not do well in higher flow.
 
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