Weight on back of tank

[VoodooChild]

I plan on putting a medium sized refugium on the back of my 30 gallon. It's 19" and I'll position it about in the middle. I plan on have 30 pounds of southdown (whenever I can find the **** stuff) in there. My question is, I figure with 30 pounds in there covering the bottom 4 inches, with another 8" to go to the top, that's maybe another 30 lbs of water or so, will the tank of my back be able to support that? I know that they sell these things, and that all the filters on the back must weight something, but 60+ pounds is alot of weight. Any comments? Thanks

[sauceman]

I dont know, sounds kinda risky...If it was in pure compression, meaning that the force was applied directly downwards on the glass, i might think it would hold. But since the center of gravity of the refugium is a couple inches back, it will create a lot of torque on that glass, and might cause some problems. Can you prop the bottom up, to take a little of the wieght off of the tank?
Sauce

[OrionGirl]

I'm with sauceman. I'd figure out a way to support the bottom of the fuge a bit, take some of the weight off of the tank. Maybe you could setup something that attached to the canopy? I know we don't have much room on the back of out tanks, but we could always rig up a platform that attached to the back of the stand and the back of the canopy if need be.

[VoodooChild]

I'll try and figure out something. Why would they sell something that couldn't take the weight? Perhaps I'm just reading the descriptions wrong. Does anyone have one?