I think that you are going to have to bite the bullet on this one. I have built a similar size rack using three edge flexwatt heat tape. I am building to larger ones right now that will use the four inch tape. I "snaked" up the side of each shelf and onto the shelf above it. I think this will be the easiest, and also the safest way to achieve using only one thermostat. I can assure you that it will not add significantly to the cost of the tape, after all you are only talking about a foot or two which is another five bucks. Besides, if you have to worry about spending a little extra money on the heat tape, how in the world are you going to be able to afford medical bills for 20 snakes?



So yes, I honestly think it is the best way to do it.
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...the oldest task in human history: to live on a piece of land without spoiling it."

Aldo Leopold (1938)



"Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us."

Calvin and Hobbes (Scientific Progress Goes 'Boink', 1991)

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