+1 for better/bigger skimmer and bio pellets. I was having the same problem, so I increased water changes and reduced feeding, after a month no real change. So I tried Nitrate destroyer from tailored aquatics. It helped, but after a month of this my levels went from 40 to 30. I have a 90 w/40gal sump. Running a vertex in-180. So I tried biopellets (vertex) I put in the minimum suggested. After 3days I had a bacteria bloom that lasted almost a week. Then the skimmer started to really pull out some nasty stuff. When the tank cleared my levels had dropped to 0.25 and as been there consistently for the over a month... I am also water changing 20% every 2 weeks
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90 Gal, Profilux 3, dual Profilux power bars, Profilux dosing pumps (dosing Fauna marine), Tunze wave maker, Tunze auto top off, 4 AI blue modules, Vertec IN-180, refuge built into sump (approx. 40 gal running), running Vertex bio-pellets in 2 fishes reactor, 18w Coralife UV light, 40 lbs sand, 100 lbs rock
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