[panmanmatt]

Yes, those are the larger magnets that I amusing. In the pics above it is on a 29 gallon tank with 1/4" glass. That was just for the pics. I am currently using it on my Oceanic 70 gallon with 3/8" glass and it is holding just fine using 2 sets of magnets. I ust made one for a friend of mine for his 120 gallon with 1/2" glass and used 3 sets of magnets. I am delivering it tomorrow so once I gr some feedback on it I will post it here.

The only problem I found with these magnets is that the epoxy is very thin and brittle. It chips very easily if you let the magnets slam together. I just mixed up a small amount of 2 part epoxy and brushed a thin layer on the magnets after I assembled the racks.