I havnt gone as far as a 2-3 day blackout, as I'm nervous the stressed corals wouldnt take it. My Tds meter says an out of 0. Yes I have a refugium with a ton of liverock, some trash soft corals, chaeto, and sea lettuce. Reef Octo in sump, forget model. Is probably a hair undersized now that I have more fish.

Me neither, but once I had such problems needed to address it. I've been cutting back on feedings too. Though I probably still overfeed, hard to tell without seeing visually what others do. (And I worry about a couple timid fish getting their fill.)