MaritimeHigh
New Member
I just recently moved from a skrog led lightting to a 400w hps system to finish out the rest of the plants veg and flower. What would be a good distance to have it above my plants ?
Depends, is it in a cool hood or reflector? If it's a reflector I keep mine 16" away with a lite breeze flowing in between it and the canopy, at 6" you'll have nice toasty brown buds , I don't run cool hoods so have no clue . Check with your hand, if it's too hot on your hand it's too hot for the plantsI just recently moved from a skrog led lightting to a 400w hps system to finish out the rest of the plants veg and flower. What would be a good distance to have it above my plants ?
I would need a shit load of air moving over the canopy to keep the plants from burning at 6" and I know that because my fan quit two weeks ago and yup burnt the crap out of a few at 16" away .6"-8" is your optimum height from canopy to light with a 400w as its HPS not MH, if you have a cool tube no problems at all if you don't your gonna want an oscillating fan moving that heat.
After 8" you really start wasting your light as it becomes useless light.
that's what i was thinking, 6 inches on a 400 hundy sounds way too close imvho..I would need a shit load of air moving over the canopy to keep the plants from burning at 6" and I know that because my fan quit two weeks ago and yup burnt the crap out of a few at 16" away .
have any pics of them? sometimes they might react a bit different switching light sources like you said you did, should bounce back after a few days time..Since I put the new light in their was a lot of moisture and condensation so I vented the tent but my plants have drooped any ideas what it could be ? I feed them remo brand every other day and follow their feeding chart and water in between feedings pH is around 6.8 and I'm using distilled water
It is ...... .that's what i was thinking, 6 inches on a 400 hundy sounds way too close imvho..
I run my 2 x 600w hps in a 4x4x7 tent at about 8 inches with 0 problems.It is ...... .
That's amazing.I run my 2 x 600w hps in a 4x4x7 tent at about 8 inches with 0 problems.