Ian, I don't think your lighting is your reason for cyano, I could be wrong but your moonlighting is such a small amount of light I have a hard time believing that little amount of light would be causing you issues. However if you are running your lights for 12 hours I would suggest dropping that down to 8-10. Have you tested your phosphates and nitrates? And how often do you change your water? If you can't seem to beat it, I suggest the 3 day black out. I did one not to long ago to beat dinos, and it worked like a hot damn. I will definitely be going that route again if I ever have algae issues. Just my 2 cents.
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