So the ceiling is 8’ 2", and the 1000 watt HPS light has to be about 2’ above the top of any plant for heat purposes.
I’ve read several times that sativas can double their height after switching to the flowering stage, but after several grows I’ve never seen more than what I’m guessing is 15%-20% or so further growth?
Anyone know how much extra height a Strawberry Cough 100% sativa would have after switching to flowering light schedule? I’m thinking I could probably switch to flowering stage at around 4’ to 4.5’ in height???
Every plant is different and sometimes fickle. I use to do the math on tent and light height assuming they would double. Some did some did not. Now if one branch is trying to be the teacher’s pet, I change the behavior with a paper clip and yarn. It’s what I do until I learn enough from the masters of plant manipulation.
If it were me. I would raise light as high as it could go, then measure from bottom of reflector to the floor. Minus the 2 ft and divide by 2. Maximum plant height.