I don't want to spend $300 on a rack so I decided to build my own since I'm a pretty good carpenter. I'm going to get 4 tubs from wal-mart and I have a lot of 1" plywood that I will be using for the shelving, but I have a few questions...
1.) How much space should I leave around the top for air to flow in? Or should I drill holes around the tub and make the tub fit snugly in the rack?
2.) Where can I get the flexwat? and do you stick it to the "shelf" that the tub will sit on or on the back wall?