>>Can I just place the heat tape on the desk/stand that the plastic tubs are sitting on?
Yes but I would not sit it directly on a nice finished piece of furniture. Not that it will hurt it I just wouldn't chance it.
>>Do I need space between the heat tape and the tub?
Yes but most tubs have feet they add enough space usually. The main concern is that the feet don't actually sit on the tape this may cause the tape to burn through. When I used this method I taped the heat tape to the bottom of the tub itself.
Hope that helped.
Jeremy
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"I am become death, the destroyer of worlds" July 16, 1945 Robert Oppenheimer
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