Just my 2 cents, but with lower nutrients, wouldn't your alk be better in the 7.5 area? And I dont run GFO, but if you turned it off, wouldn't your water have more nutrients? and not need to add "stump killer"
Cheers! Mark
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2x 65g displays with a 30g cryptic refugium and 30g sump - 55g reef
30g Bio-cube reef - I.M. 30g reef - 45g freshwater
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