2 different size heat tape

[SatanicIntention]

I do. On two of my racks actually.

One rack is my 6-tub rack that holds 41qt tubs. It has 1ft panels of 11" for the hotspot, all parallel wired. Then it has 2ft sections of 11" flex, that is also parallel wired. I use a Herpstat 2 to control it. Everything runs fine.
This is not how it looks now, but that's pretty much it:

How it's wired in the back, the other wiring goes down the middle and through the shelves:


My other rack is an 8 shelf rack that holds either 8-32qt tubs or 16-15qt tubs. It has 3" flex running along the back as a hotspot(2ft of it), and it has 2ft of 11" running along the front, to help with ambient temps. The 3" is controlled by a Helix, and the 11" is on a dimmer, that is then connected to the Helix. Just dial it down a bit, and you get perfectly steady, non-fluctuating temps. Works awesome
Being built and making sure I'm not catching anything on fire:


Wiring:


With snakes inside(definitely not up to full capacity in the pic)