Hey guys,
I posted this once already in the newbie section: https://www.rollitup.org/newbie-central/222897-light-burn-what-else.html#post2844480 , by accident, but i meant to post it here. You can read that thread for a summary and ill also repost here.
I recently replaced my CFL+FL setup (approx 5 125w 6700kCFL lights, 2 100w 2700kCFL lights (i got it backwards in my original post), and a 4 4' t8 bars (2 cold 2 warm)) with a 1000w HPS and a 400w MH. I have placed them originally about 2 1/2 - 3 ft above the plants, and after seeing this I moved them up to about 4 ft. What I am seeing a slight "droopiness" and "curl" to the plants leaves,not around the edges but at the ends they are curling slightly downward toward the stem, and 2 or 3 of them are bending a little bit on the leave, looking like slight dryness on the side of it. I dont think its nute burn since I feed them about once a week with a small amount of nutes (I just fed them another small amount incase it was nute deficiency). I thought it might be water deficieny at first since im used to watering them every 3rd day but the new lights dried up the water pretty quick so I gave them some water too and that seemd to perk them up a little but not perfect. Just wondeing whats wrong and how far you guys have your lights of similar watage positioned above your plants.
I have the temperature set to a constant 80* fahrenheit; it never ever even wavers (except in the light's off time i set it for 5* lower). I never thought about it being too cold on the concrete floor, plus this didnt happen until I switched lights. I dont think thats the problem because i usually go down there barefoot first thing in the morning to check on 'em and since its a constant 80 down there the floor is pretty comfortable on my feet, also a few of them are in 3 gallon pots and they are affected just as much as the rest. I also forgot to tell you all that about 2 days ago I began a spraying regimen in case it is spider mites (sprayed once 2 days ago, will spray every 4 days until the problem clears up to kill the mites and the new larvae that hatch since the spray i have doesntt kill the eggs).
Next day: I moved the light up even more (at this point i dont think its light burn; the lights are literally four 1/2 to five feet away from the tops of the plants now) and my plants are looking even MORE droopy! (however some of them look completely fine). Im completely baffled. Maybe the plants are getting used to the new lights?
PH is good, humidity is at a constant 40%, Didnt feed for the first 2 weeks of growth then started feeding a small amount of 12-6-9 once a week. They have a constant light breeze, yesterday was watering day and that didnt perk them up, theres really nothing i can think of that it could be!
PS: my hand is very comfortable held where the plants are, I could keep it there for hours although I would probably get a sun tan/burn - it is equivalent to being in the hot sun basically.
Here are some pics of the first day, it is day three now and they all look basically the same except on day two I noticed one plant had one single leaf (one of the bottom ones) that was "burned" (not nute burn, its grey/brown, not yellow) on the edges very very slightly.
Ill post some current pics if anyone would like to see them though they look very much the same.
Today I am going to try just using the 400wMH and keeping the 1000wHPS off for the day (or most of it at least).
I posted this once already in the newbie section: https://www.rollitup.org/newbie-central/222897-light-burn-what-else.html#post2844480 , by accident, but i meant to post it here. You can read that thread for a summary and ill also repost here.
I recently replaced my CFL+FL setup (approx 5 125w 6700kCFL lights, 2 100w 2700kCFL lights (i got it backwards in my original post), and a 4 4' t8 bars (2 cold 2 warm)) with a 1000w HPS and a 400w MH. I have placed them originally about 2 1/2 - 3 ft above the plants, and after seeing this I moved them up to about 4 ft. What I am seeing a slight "droopiness" and "curl" to the plants leaves,not around the edges but at the ends they are curling slightly downward toward the stem, and 2 or 3 of them are bending a little bit on the leave, looking like slight dryness on the side of it. I dont think its nute burn since I feed them about once a week with a small amount of nutes (I just fed them another small amount incase it was nute deficiency). I thought it might be water deficieny at first since im used to watering them every 3rd day but the new lights dried up the water pretty quick so I gave them some water too and that seemd to perk them up a little but not perfect. Just wondeing whats wrong and how far you guys have your lights of similar watage positioned above your plants.
I have the temperature set to a constant 80* fahrenheit; it never ever even wavers (except in the light's off time i set it for 5* lower). I never thought about it being too cold on the concrete floor, plus this didnt happen until I switched lights. I dont think thats the problem because i usually go down there barefoot first thing in the morning to check on 'em and since its a constant 80 down there the floor is pretty comfortable on my feet, also a few of them are in 3 gallon pots and they are affected just as much as the rest. I also forgot to tell you all that about 2 days ago I began a spraying regimen in case it is spider mites (sprayed once 2 days ago, will spray every 4 days until the problem clears up to kill the mites and the new larvae that hatch since the spray i have doesntt kill the eggs).
Next day: I moved the light up even more (at this point i dont think its light burn; the lights are literally four 1/2 to five feet away from the tops of the plants now) and my plants are looking even MORE droopy! (however some of them look completely fine). Im completely baffled. Maybe the plants are getting used to the new lights?
PH is good, humidity is at a constant 40%, Didnt feed for the first 2 weeks of growth then started feeding a small amount of 12-6-9 once a week. They have a constant light breeze, yesterday was watering day and that didnt perk them up, theres really nothing i can think of that it could be!
PS: my hand is very comfortable held where the plants are, I could keep it there for hours although I would probably get a sun tan/burn - it is equivalent to being in the hot sun basically.
Here are some pics of the first day, it is day three now and they all look basically the same except on day two I noticed one plant had one single leaf (one of the bottom ones) that was "burned" (not nute burn, its grey/brown, not yellow) on the edges very very slightly.
Ill post some current pics if anyone would like to see them though they look very much the same.
Today I am going to try just using the 400wMH and keeping the 1000wHPS off for the day (or most of it at least).
. I figure even if the light didnt need moving, my buddy said that the plants will be kicking into overdrive and be growing so fast that theyll soon reach a point where we'll have to even move it again.
