Rack Heating Question (RB Rack)

Hi everyone,

I'm considering getting the Iris sweaterbox rack (4 shelf) from reptile basics. It would be my first rack and was wondering if I need every shelf to have a probe connected to a thermostat (I currently have a herpstat 2), I'll definitely have thermometers on every rack though. Also, has anyone ever had any heating issues with this particular rack?

Thanks for any input.

Usually, one puts the thermostat probe on the middle shelf of the rack, and adjust temps from there.

I have a 4 shelf boaphile rack and my thermostat probe is on the 2nd shelf.