I placed them horizontal because it would have been far more strips to get a good distribution of photons. Being horizontal, they are closer together (I only had 5 strips for the 2 long walls). One other thing to keep in mind, is with low-output LED strips, foliage must be very close to the light, just a couple inches or less, for it to have much of any effect. The drop-off is incredible, PAR-wise.
Another reason they were placed horizontal, is because the total tent height is 5ft, and the lights are 3ft. Being that my quantum boards only have the lower 4ft to work with, means that the strips would have needed to start at the floor in a vertical orientation, which didn’t make sense to me, considering pot height, and the under-canopy lighting I initially had. I started the horizontal strips even with the under-canopy strip that is oriented on the Z axis.
I use a few Govee bluetooth sensors that connect to my computer where I set triggers. These record just humidity and temperature at various locations in the tent. Periodically I will manually measure the leaf surface temperature, which is usually a 4F differential (-4F of ambient temperature).
To manually measure the LTO, I follow my own guide I wrote here: