[clownfish1485]

Hey all,

I'm planning on starting vivarium construction within a few days. I've been reading the forums for the past week and it has helped immensely but I have a couple of questions just to make sure I'm prepared

1.) I plan on constructing a waterfall in one of the corners that will lead to a small pond. I already have a small filter for this feature, so I can just spread some silicone on the glass where the waterfall will be, then while it's still sticky, spray Great Stuff overtop, let it cure and harden, then use a knife to sculpt?

2.) Can I use Great Stuff on the bottom of the tank for the pond, or will water eventually soak through it?

Thanks in advance!