We have a 300 gal sps tank that has been up and running for a year and a half. The SPS are growing nicely. Color of the coral is good, not great. This algae has been a problem since hurricane Irma in September, we were only without power for two days, but we had air stones and an adapter for one pump, so all we really lost was the algae in the refugium, which was replaced and is doing very well. We have six green chromis, two anthias, one foxface and one kole tang. The clean up crew is three sea cucumbers, snails, a few sea urchins, a cleaner shrimp and a banded shrimp. We do 50 gal water changes a week, add kalk, A and B, and Magnesium. I feed mostly Rogger's. The tank gets alternating reefroids and reef chilli three times a week and Red Sea Coral Nutrition A and B three times a week. Iodine and strontium added once a week. We run GFO and carbon in the filter socks. Phosphate on the Hannah checker 0-0.07, nitrite on Hannah 0.014 - 0.005, Nitrates with salifert 0. SG 1.024-1.025, Alk 9.5-10, Ca 470-400, Mg 1650 - 1700. Hoping for help on how to get rid of this algae.

