Aqueminianswered grow question 3 years ago When I was running 2 TS1000 in a 2x2x4 I never turned them below 100%
I started at 32 inches and brought it down every other day till it was 20 inches and then raised the light as the plant grew.
Now I run the 2 TS1000 and a Master Pursuit 500w CMH from growers choice. They all stay at 100% and I let my plants grow into the lights now at the very top of a 4x4x6.5
If you want short bushy plants with close nodes you want to be 20-24 inches at 100% the entire veg, then for flowering 16-20 inches. If your plant can take the heat and light during flowering then 12 inches.
Everyone grows different. Some like some stretch and others dont.
If you grow a specific strain a few times and Master that strain and light, you'll learn how much you can push a plant and what you can do and get out of it.