Yep, running a Coralife 65 skimmer which pulls a cupful of nasty dark green/black skimate every 5 to 7 days and a phosban reactor. Also growing cheato in the sump. Tried two different test kits. I don't have an abundance of nuisance algae growing so I don't think it's high nitrates/phosphates. From what I was reading corals need a certain amount of nitrogen in the form of amino acids excreted in fish poop and this is a different form then the nitrates etc. you get from breakdown of uneaten food etc.
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