Quote Originally Posted by FireWater View Post
Haven't used one yet. Looks kind of cool. I believe Randy (mkengr45) is using something similar.
Yep, been using them for a while. The magnets are weak, I am using plastic coated neodymium on the outside and they are much stronger. Mine have been in there for a while and no corraline even though all my glass, rocks, and overflow are covered.