The ve-100 I wouldn't say is junk but it's on/off style. It will drop a degree then start heating and then shut off when it reaches temp and it may shoot over temp a few degrees. With the pulse proportional ve-200 it will keep one steady temp, it may go over 1 degree once in awhile but that is it. Proportional will also make a heating device last longer. The also make the ve-200d which is dimming which means it will only supply enough power to keep it at one steady temp. The ve-200 is for non light emitting heat sources while the ve-200d can be used for any heat source so if you think you will ever use a light bulb as a heat source get the ve-200d, if not the ve-200 would be fine. Either one of those 2 would work great with an rhp.
This setup is for a bp right? If so I would suggest putting one hide right under the rhp and setting the thermostat so it will be 90 on the ground and then put the other hide on the cool side furthest away from the rhp, I say furthest away bc the rhp heat will radiat to the cool side and the closer the cool hide is to the rhp the warmer it will be so furthest away from an 80w rhp should give you between 78-82 where the cool hide is. I would not put the climbing branch directly under the rhp bc then your snake can be close to the rhp for an extended period of time and if your ground is 90 then at the top of the branch it will be around 100 or more, I would put the branch a little after where the rhp ends. You shouldn't need the paving stone once you have the 80w but just in case I would keep it handy.
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