[reefburnaby]

Hi,

I guess...it depends. The weakest area in the tank is the middle of the tank. The tank is supported by the four glass walls...so the middle will have the least support and the most flexing. It is the amount of flexing that causes the tank to fail. Glass is extremely hard (almost as hard as diamond), but it is brittle. Hence, flexing will causing it to crack and break.

So...if your posts are near the glass walls, then you don't have a problem. This is because the torsion arm between the pivot (i.e. the wall) and your load is short.

However, if all of your legs were near the center of the tank...then your bottom plate may have a lot of stress. In this cause, the torsion arm is longer. Incidently, this is why your tank tend to bow outward near the top and center of the tank.

Any who...I have 70 lb of rock and its on a two layer rack. The rocks aren't touching the sand...but some of them are. Its made from 3/4" PVC and there are two racks (one with 6 legs and the other with 7). I kind of like it...I might post some pics but I need a digital camera to do that. SLRs just suck for this application.

Say Darren, how do you like your DC-280 (that is what you have right ?) ? I can't decide if I want to spend $300 for a 280 or $600 for good nikon 950....

- Victor.