Is the bottom glass on a BC 29 tempered or not?
I have been reading about incorporating closed loops into systems and I have been tossing around ideas to get more random flow in the tank (wave makers, mp10, closed loop etc.) I am liking the idea of a closed loop using a scwd on the returns. Before i decide i need to know if the bottom glass is tempered.
Anyone ever drill the bottom before.. or cracked a bottom to know if its tempered or not?
Thanks for all replies,