Using more than one heart source for multiple enclosures - Thermostats

[Starbuck]

in theory, yes...
though remember that you only have one probe, so you can only measure temps in ONE of your tanks/heat sources, all of the otehrs will be controlled by a thermostat adjusting ONLY for that particular probe and heat source.
From what i have heard, it is best to place your probe near your warmest site (thinnest substrate/highest tank?) etc, and remember to check ALL of the temps with a temp gun frequently.

Also, all tanks/hot spots will be approximately the same temperature, so this might not work if you are keeping multiple species. You'll also have to make sure your thermostat is rated appropriately for that much output :P

All of the above not withstanding, i will be doing something similar once i purchase my 5 cage stack soon (all my animals are colubrids)