Styro molds

I have a bunch of Styrofoam boxes, about 18"x 18'18'....actually I guess you could call them a cube...LOL

Can I put the hypertufa on them and just leave the boxes inside. I want to make a fountain with a small pool under.

Also, I made a lion's head just before Wilma. Well, that poor thing got tossed from the backyard to the front. Had to save some pieces, but they are falling apart, dissolving.... They have been out in the weather since then. Three years to be exact.

How do I keep my fountain from turning to sugar?

Thanks kids,


Hap