Join Date: Jul 2010
Location: Outside Philadelphia, PA
The trick here is to use materials that can take some water with out coming apart. Particle board is something that loves to take on water, swell, and become useless.
I built a stand for my 90 gal tank. I first constructed L girders to build the supporting frames. This was a 1x2 glues and screwed to a 1x4 to form a long L shape. This gives you a much stronger form than a 2x4 and it's much less flexible. At the time red oak wasn't that expensive, so I used that, since it's much stronger than pine.
I then constructed 2 frames the size of the tank base out of the L girders, with the 1x2 being the part the tank would rest on. They were screwed together. Cross members were also added.
Then for legs I used 2x4 that were bolted to both frames. The legs were along the frame so that the spaceing was 1/5 - leg - 3/5 - leg 1/5. This is actually stronger than placing the legs in the corners, because the long frame spans less distance. The top frame gets the tank and the lower one was about 8 inches odd the floor, and could hold either a much smaller tank or any other gear.
Since this was for the basement, I didn't bother with sides, but that could bu easily added using the wood or plywood of your choice. If your going to get that fancy, give the thing a few coats of polyurethane or spar varnish or paint to keep the moisture out.
It's really not hard to build a tank stand, even if you don't follow my method. Most people so over design stands that there is no danger of anything ever happening to them.