metrogrowth

Anyone with advice adding Cos enrichment to my 10'x12'x8' room using a Atlas 4 & 2 sensors. At what level do I hang the dismemberment line above my plants. Should it be looped?. How do you loop?
or should I plug the end of the line.

I'm sending it back, my calibration. Is wacked and it won't re calibrate. Loop lines? Mqybe that's what I'm doing wrong, please explain