Four bulb t5 on 55 gallon

[ohio reefer]

What could I grow under a four bulb T5 fixture on a 55? I have a 3 inch sand bed so the corals wouldn't be 17 inches down at the deepest, thanks!


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[johnanddawn]

Depending on the quality of the fixture, reflectors, bulbs and depth of coral on rock work - basically anything