<a href=showthread.php?s=&postid=10918349#post10918349 target=_blank>Originally posted</a> by jnarowe
probably true. I don't have to worry about it and I wonder how many people with 1" thick acrylic are really going to be in the market for Vortechs. With my system, I am using them, but I will need quite a few of them as my reef progresses.