think I may be taking the plunge

After I get my het albinos in, I think I will be going to tubs. As it stands, I have 4 tanks on top of furniture in my room and soon to have to add 2 more enclosures and whenever my large BCI comes home, that is just a huge 4x2x2 tank that gets thrown into the mix. So...I decided I will build a rack. I think I want to do with with Sterilite 1960's for any larger BP that I may acquire and do one with with maybe 1756's(23.5x16.25x6 3/8). Flexwatt 11" flex watt on one side of the 1960's and would 3" work on the 1756's? Both racks hooked up to it's own Johnson thermostat

You may have already considered this... I have a rack that uses the Sterilite 1756 tubs. It also holds 1754s. A single shelf can hold either 2 1754s side by side, or a single 1756 placed in sideways. Makes for a very versatile rack!

As for heating, I would probably stick with 3" for all of them. I have a homebuilt 1960 rack that uses 3" flexwatt on the floor at the back (tubs go in lengthwise), and it works great. My hatchling racks also use 3" flexwatt. My 1754/1756 rack uses heat cable, and is not nearly as stable. My 3" flexwatt racks hold the temp within +/- 1/2 degree, while the heat cable rack fluctuates +/- several degrees. All of my racks are on proportional thermostats.

Steve