Sounds like a bacterial bloom, probably a different bacteria than cyano. My guess is that you are causing more bacteria to grow by dosing the vodka than the skimmer can remove. I don’t really know much about that skimmer, but how is the skimmate amount and consistency? First think I would try is to lower the amount of vodka you dose by .5ml for a few days then down to 1.0ml if that doesn’t clear it up.
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“In wine there is wisdom; in beer there is freedom, in water there is bacteria.” - Benjamin Franklin
Current Tank Info: 90 gallon reef. Biocube 29 lionfish tank. Mantis tank.
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