Recently bought a 156g Oceanic RR brick with no center brace that is constructed out of 3/4" glass. It's 60x24x25. I know it doesn't meet the 180g requirement for this forum but I figured this might be the best place to find out what my powerhead options are. I already have an mp40w and i guess 3/4" is the thickest it is supposed to work on. I was hoping to add some of the new Koralia Evolution powerheads as well but they are only rated for 1/2" glass (I wanted to use them because I already own a wavemaker they should work with). Is there a way to make something like that work or am I going to need to go with another Vortech or a Tunze or 2? Would I be better off going with a closed loop around the top?