Carlos,

Yeah we have been thinking of the weight and wondering if it will hold. However the bottom of this breeder is tempered surprisingly enough . The idea with the small rocks on the bottom and building up to the top is to help spread the load out as much as possible. We won't be adding the rocks back in until we have the tank set in place and won't be moving it again after that.

The egg create and sand idea sounds like it might work if we start to suspect any problems, but I think the tempered glass will hold up. We will be weighing all the rocks to see what the total weight of the rocks are and then go from there.

Thank you for the advice!