I have 4 39 watt t5 bulbs two 18k and two acentic over a 50 gallon tank. With two Koralia 750 gph and one Koralia 425. I have the Hang On Refugium with Protein Skimmer 14" from aquatraders it has the 250 gph powerhead running it.
my frag has 7 polyps on it