I know this has been mentioned before but have you tried a different test kit? How long after you add the Turbo Calcium are you testing? I usually wait a good 2-3 hours for everything to get mixed real good. On a side note you are adding it to a 180 gallon + sump tank so maybe it will take alot to get the CA up? just grasping at straws here. LOL
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65 gallon tank, 3 gallon refugium, 90lbs LR, 50 lbs live sand, Coralife Super Skimmer 125, 24" 250 watt DE Pendant w/14K Hamilton. 1 ocellaris clowns,1 Tomini Tang, 6 line wrasse, 12 turbo grazer snails, 12 nassarius snails, 12 Cerith. Open Brain, Metallic Green Brain, candy cane coral, 1 enchino frags, and 2 maxima clam.
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