I'm trying to build a snake rack, I'm good with everything but the heating. I was going to use flex watt heat tape but what I'm not sure about is the herpstat. Hard to find videos on it but not sure what to get. All the ones I'm finding are $135-200 and up. Is this the one I need to use or is their other ones that will work? Any other opinions sor heating before I pick everything up? Was planning on having 5 or 6 selfs using rubber made, starlight tubs. Please help, thank you!