Ok so I'm gonna build a breeder rack with 32qt tubs, it's gonna 2 tubs wide and ten tubs high so total of 20 tubs. I plan to use flexwat for belly heat but should I use 11" or a narrower width? Also for my incubator I'm going use a Herpstat but can I use a less expensive on off tstat for the rack? I know the on offs have a little more temp fluxuation so I'm not going to risk that for the incubator but would it be ok for the breeding rack?

Also, I was hoping to come up with something a little less expensive and hopefully lighter than melamine to construct the rack from anyone have any suggestions on this?