Quote Originally Posted by deranged chipmunk View Post
as long as it's inert, which it should be, the recycled glass should be fine. after all, it's way too buried to be eaten.
I'd agree. Assuming it can't be eaten, isn't sharp, or isn't accessible to the frogs, glass should be problem. I've seen marbles used as a drainage layer, kind pretty, but also kinda heavy in case you need to move things.

Quote Originally Posted by coastal20 View Post
I just got the hygrolon this morning, Thought I would post a couple pictures of it.
So, where did you get this and how much was it? It looks like interesting stuff.