I have a 4’ 8 tube 40,000 lumen fluorescent light. Is this sufficient light, and how far should I keep it above the plants?
This sounds like a job for Lighting Man, able to leap fluorscent lights in a single bound, more powerful than a 650r it’s @dbrn32 .
How large is grow space?
You’re my new favorite person. Also @dbrn32 you gotta change your name to Lighting Man… XD
It will grow weed bit it is not optimal by far… it will work for heavily trained shallow canopy anything over 12 inches depth is gonna suffer in density… florecnts best job is cloning and short veg period plants… highly advise against flowering with florecents if not a seasoned growr
It’s 8’x8’x6’ tall underground concrete storm shelter but I just have approximately 6"plants on a table starting them and will move them outside when they get big enough to possibly survive the wildlife.
Way to small you can do the foot print under fixture and not much more
Did you get the light at a hardware store?
Sounds like a typical t5ho fluorescent 4’ grow light. These will effectively veg up to about a 4’x4’ space. Starting outdoor plants with one shouldn’t be a problem as long as you don’t require light to cover a lot more space.