Space above grow light. Height question?
- Thread starter yerpgod
- Start date
hotrodharley
Well-Known Member
Using a reflector? Or are you talking the distance from the canopy to the bulb? If that, put your hand under the light. Wherever is the closest point you can hold it without it getting real warm for 30 seconds is where you want that light. As close as the plants can take it without cupping, curling or burning etc.
thehole
New Member
There will always be lumen loss the larger your grow room is, whether it's up, down or at the sides.
Most need that room above the lights to eventually move the light/reflector up, if you don't plan on moving your light up during the entire grow then one needs to build the proper sized grow room.
I have a 4x4x6 1/2 high veg room and a 7x5x7 1/2 flower room and my lights come WAY DOWN in each room because you need that flexibility in up and down distance to adjust the height the lights are form the canopy.
So in theory yes you lose lumens but it's minimal loss if you have flat white painted walls and ceiling, panda film, mylar or some other reflective surface which you should have. Plus, it's necessary to have that space.
In the final weeks in my flower room my reflectors are all the way up to 7 feet, usually with only maybe 4" of space to the ceiling.
It's normal. A higher ceiling can also help with heat.
Most need that room above the lights to eventually move the light/reflector up, if you don't plan on moving your light up during the entire grow then one needs to build the proper sized grow room.
I have a 4x4x6 1/2 high veg room and a 7x5x7 1/2 flower room and my lights come WAY DOWN in each room because you need that flexibility in up and down distance to adjust the height the lights are form the canopy.
So in theory yes you lose lumens but it's minimal loss if you have flat white painted walls and ceiling, panda film, mylar or some other reflective surface which you should have. Plus, it's necessary to have that space.
In the final weeks in my flower room my reflectors are all the way up to 7 feet, usually with only maybe 4" of space to the ceiling.
It's normal. A higher ceiling can also help with heat.
yerpgod
Member
im talking like the height of my grow space in general. like its 8 ft high & the lamp rest about 5 1/2 ft high and thats the highest it can go. do i lose anything above the light with the space above it?
hotrodharley
Well-Known Member
Well, like The Hole said . . .. Got a plan to reduce this loss?