Here's a photo if you are curious. It is a beast, but I'm happy with the result. Not all the tubs had snakes, and not all the shelves have tubs, so you can see how the heat tape is set up too. My husband and I are amateur builders. It did take us days to build, but that's because we didn't really sit down and work on it straight through, just kind of tinkered around a little here and a little there. I'm happy with the results. We are planning to keep our numbers low too.
Oh, and the thermometers on each tub have been altered so they have 3 wired probes (two for temp and 1 for humidity). That way I could keep the actual unit outside of the tub and make a quick check of temperatures without having to open every bin. I don't know if having a thermometer on every tub is considered over kill or not, but I prefer it that way, just in case there are differences (i.e. parts of the heat tape fail, differences between shelves, etc).
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