I moved the fish out of the sump to a 40 gallon breeder in the garage for the cupramine treatment. The reason I chose hypo over cupramine to start out with was because I had too many fish for the QT set up I had available. My sump was way bigger and had way more potential for filtration (one of the chambers was loaded with rock), but I wasn't prepared to dose any sort of copper in my sump. When hypo failed, I moved everyone to the 40 gallon to treat with cupramine, even though it's waaaaaaay too small, and am just dealing with the biggest PITA 65% water changes every other day to try and keep the ammonia and nitrite under control. I keep waiting for this cycle to cycle itself out, but I'm not sure if the external marineland canister filter is up to the job of dealing with 4 medium sized reef fish and 4 anthias. I'm also not sure if the ammonia I keep registering at this point is real ammonia, or false positives from the cupramine, which apparently can cause ammonia tests to pop.
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