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Pacific Northwest Reefers
The rocks I'm working with - Caribsea Moani - are too large and heavy to build a full aquascape outside the tank and try to lift in. Plus, I have a somewhat smaller access port cut in the integrated tank lid. They stack together fairly solidly but I want to insure no avalanches, so I'll go ahead and cement them in-tank. Approximately how long will E-Marco 400 take to set firmly?