How do I get rid of this algae? I have 2 10 K
metal halides as well as actinic. the whites are on from 6 Am to about 6 PM, and the blue are on at 6, and off at 6 pm. 20 gallon tall and lights are about 4 inches above the top of the glass evap. I have a skimmer, don't over feed and everything looks good, but this algae is in there and taking over and covering my corals. It's in my 14 gallon biocube too and it's lights are white with no blue and this same red algae is in there too. I thought maybe it was the blue but it's not. Help?