non toxic fish tunnels

[Georgia Novak]

I am going to be making fish tunnels and wondered if all glass is non toxic. The glass will be single layer and all additions will either be fused or glued on using fish tank silicone. I guess my biggest concern is irr. glass. Georgia

[Greg Rawls]

I discuss the non-toxicity of glass on my website

http://www.gregorieglass.com/Health_Saf ... mical.html

[Morganica]

One other concern is sharp points--smooth down any rough or pointy edges.

[Georgia Novak]

Thank you both for your prompt replies. This is such a great board, always someone to help. thanks again. Georgia