I am in the process of setting up my new 180 gal Glass Cages reef tank. I put a 1/2" thick foam insulation sheet under the entire tank. I just read some threads here and on Reef Central that said if the tank has a plastic molding around it that you should only put the foam around the edges. The plastic molding around the GC tanks is very thin and I didn't think it would matter if the foam is under the entire tank.
I'm looking for some guidance on this. If it could cause the glass to crack, I will take the tank off the stand and redo the foam so it only lays under the edges.

Thanks,
Rick