if there is no fish or coral in the system, maybe try to do a 2 weeks dark out. Lights off, cover the tank with blankets, box, etc.. Most of the algae should be melted without light source. And after that, do a good size water change.
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150DD mix reef with 90 gal sump and 40gal frag tank
purple tang, sohal tang, yellow eye kole tang, fairy wrasse. cleaner wrasse, leopard wrasse, and misc fish.
GHL Mitras 6200HV X 2, MP40 X 2, MP60 X 1, tunze 6095 X 2, Vertex RX6 calcium reactor, Bubble King SM250, Aquamaxx bio pellets reactor, Profilux 3
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