I use Herpztat 4's to run my pvc cages. A Herpstat 4 might be overkill for one rack, but it will give you alot of flexibility if you decide to expand beyond one rack. You will be able to run up to 4 racks, or any combination of racks, cages, and incubators...
Sent from my Motorola ATRIX using Tapatalk 2.