Quote Originally Posted by Dianne View Post
I don’t use any type of chip substrate, so I can’t speak to that part, but I can confirm that the heat does rise and warm the floor of the cage above. I don’t get a lot of transference with my plastic or pvc cages, but it is a little warmer on the cage floor due to the rhp on the cage below. It takes a little tweaking with the stack to get the temperatures where I want them. Each thermostat has a slightly different setting. That said, rarely are all the rhp’s running at the same time because my thermostats are the on/off type rather than proportional.

You could use a sheet of rigid foam between the two cages (1/2” maybe?) to provide a break between the cages.
Thanks. I have those little felt pads for under chair legs on the top one. Was hoping that 1/4" air gap would be enough to minimize it. I will keep and eye on the floor of the top cage and see if I need more separation. I gave myself a month to get the tweaking in so I should have plenty of time to get it all figured out. I bought the dual zone VE thermostat so I only have one unit to work with and it was cheaper then buying 2 separate ones. I have it set to proportional.