silicone cure time

[lorenz0]

I'm trying to figure out what i am going to do with the move of my tank and the one thing i said was i am going to deal with the over flow and get rid of it. One idea is to run my drain and emergency through my original 2 1" (one will be re-drilled to 1 1/2" bulk head) and than add a block off piece of glass for the original holes drilled for the drain and emergency.

or order a new tank

will all my SPS be ok in a holding tank with just my powerheads for 2 days?