No it doesn't, I put it on and let it set for a few seconds and then place it in the tank.
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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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