[homer1475]

Only thing I've seen, on 12mm glass and at full speed, the wet side will work, but also spin the entire wet side inside the tank slightly. I'm curious to see if it happens on 11mm glass.

I will add though, in my biocube, I have the 2 mp10's and one hydor 240 pump that turns on for 10 minutes every hour pointed at the surface to aid in gas exchange. So I'm 100% positive I'll either be adding more powerheads, or mp40's, or maybe even a gyre? I've been reading good things about the gyre now that their in revision 2.