[quote=Basile;No , i've just got an idea, Lowes has pre-cut plexiglass that i can buy. Then i'll rebuild another support system with 1" pvc this time and still put eveything on a plexiglass who'll spread the total weight along its entire area of the panel and protecting the glass at the same time. Thanks for your inputs guys.:biggrin:[/QUOTE]
:thumb::idea::thumb:
I would buy the thickest plexiglass available to have a safe piece of mind.
Make sure all your PVC on the bottom is as straight a possible simply to disperse the weight equally...
I like your design..

Once you put your sand in will it not also help support that structure.I dont see any problems at all and wouldnt change a thing. Egg crate under the sandbed sucks though. It eventually get exposed and looks terrible once it does. I think your rockwork is cool. so to answer your question....just a little bit sissy:lol:

If you are using nylon rod, switch to acrylic and it will fix most of your problems. Nylon is not the best choice as it will begin to crack under the weight and will soften and swell in water.

Also, you can use physics to your advantage and add some weight on the opposite side from the overhang to reduce the torque (the bending force) on the rods. I did this on one of my old tanks and it worked like a charm. There are a few other things, like anchoring rods, that would also fix this and be easily hidden.

Photos shoot
 

So my sculpture is finished, just have to rebuild the support with 1" pvc which i got as you can see i just need elbows ,lol. Then just got to hide those nuts and put it in the tank with a plexi glass in the bottom. The sculpture is 36" longX20"wideX 20" hight. My tank is 21" hight, but the structure was suppose to be built with 1/2" pvc now its with 1" so my last rock will be floating, i'll put a mini palm tree and a lodge for the snails.

http://i434.photobucket.com/albums/q...Photo003-4.jpg

http://i434.photobucket.com/albums/q...Photo004-3.jpg

http://i434.photobucket.com/albums/q...Photo006-4.jpg

http://i434.photobucket.com/albums/q...Photo007-4.jpg

http://i434.photobucket.com/albums/q...Photo008-4.jpg

http://i434.photobucket.com/albums/q...Photo009-4.jpg

At the end of the ramp a stalactite will come down.

Once again. Thats really cool. A frag plug will probably sit nice on those nylon bolts and whatever coral you choose will encrust over them.

LOL i've paid those custom made starfire tanks that i've been waiting for a while and i don't want anything to happen to them, i'll even phone the manufacturer tomorrow to discuss the Lb / sq inch those tanks can handle, to be sure. They, must know their product better than anybody lol. But thanks for the encouragements.