I've been thinking for quite some time that I needed to upgrade the heating systems in my oak BRB breeding cages.
My original cage was heated by light bulbs on dimmers and a Helix thermostat. Night drop was a timer switch shutting off all power.
BRB breeder #2 was improved and had flexwatt underneath but I believe much of the energy was wasted and lost into the room. It was also controlled by a helix DBS1000. I still like the helix units but for a stack, the upper cages are warmer than the lower ones.
So, I bit the bullet and ordered in 16 RHU's from Pro-products. I also bought two of the herpstat pro t-stats, four channels each and lots of built in features. I installed one RHP in each section of both BRB breeder stacks. I used one t-stat channel for each right/left pair of cages, When I first powered them on and set all the temps and night drop I could see about a 5 degree difference top to bottom. Now that they've been running for a day, all the temps have settled down and are almost identical. The upper cages can still be a bit warmer due to room ambient but within a couple of degrees of set point.
To help control temps I have cooled my room a bit by shutting off unoccupied cages (several BCI males off to see their girlfriends). I also sealed off my heater vent. I had it closed but still would et some warm air when the furnace was blowing. Those fixes along with the RHU's vs light bulbs and flexwatt and my room temps have dropped several degrees.
OLD cage pics (will have to take some new ones later)
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Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC)
0.2 kids (CBB, selectively bred from good stock)
LOL, to many snakes to list, last count:
12.24 BRB
11.13 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 


I'm going to pick one up in the next couple of months and will let you guys know if I'm able to hack it.