stand durability

I have a ton of cellular pvc and I've messed around with using it for stands a little. I made a one for a 22g bookshelf stand using 1" and 3/4" PVC but the stand itself is a little over a foot tall sitting on a desk. Next I'm considering using PVC to build a 16x24 stand but I want it about 40...

Hi friends! I recently bought a marineland 180g tank with stand and I noticed that some corners have a 1mm gap. It got a bit wet in the back of the truck when I brought it home. Do you think I should consider reinforcing the stand? Thanks, Dimos