A real conundrum. LED lights are killing my plants! Why?
- Thread starter Groff
- Start date
That would be...
8 ROYAL BLUE 460nm LED'S
64 RED LED'S 630nm
4 DEEP RED 660NM LED'S
2 WHITE 12000K
1 IR 730nm
1 UV 380nm
So does that mean these lights are crap? It does have ALOT more 630 than 660... by a LONG shot... are you sure about that? Please tell me more about your friend's light! The manufacturer is quite certain about these ratio's...
Really? hmmm... where did you get it from?
As for me it looks more like ph issues.. But have not much experience with other led's than fero...
It is not a pH issue I assure you. I haven't tested the run-off in quite some time, but it was around 5.8. I have calibrating once a week, just to be extra sure. That was one issue I have been scrupulous about since day 1. I am now sure its not pH, plus, upon shutting off the LEDs, new healthy lush green growth.
I recently read a thread where the grower quoted the manufacturer who suggests to start the lights at 24 - 30" (wow, thats 60cm!) and lower 1 inch until first signs of burning / bleaching appear, and he did describe the same crispyness... I did have them quite closer.
Thanks for participating, and keep it coming!
Last edited:
Way to much 630 dude you want just a few more 660nm than u want 630nm, my 180w lights have 30x630nm and 36x660nm. Have a little look here http://grownorthern.com/ there is some great info on spectrum.
could it be too much ULTRA VIOLET light. I remember as a youngster i tried growing some tomatoes with what i had thought was a CFL tube kind of like a black light style cfl, the bulb wasn't black/purple but it looked like a warm spectrum of light. I went to bed the 1 night i had been working around it and i woke up the next morning and i couldn't open my eyes. I think that the light some how burnt my eyes; i went into my little room that the plants and light were in, and all of the plants were dead and wilted over. Too much UVB im thinking. the god damned fucking light even sun burned my face. Come to find out, my brother had stolen the light buld from his high school's chemistry lab; in which the light was in a sterilization closet. This closet was used for killing off germs on equipment; such as goggles, scissors, hemostats, etc... NE ways does any body think that this could be the case? Too much UV?
Yes it is something to consider mate,but the original blackstars do run with UV in there spectrum and they don't cause adverse effects on the plants.
Uv can be harmful to plants the same as us, UVB is only Realy beneficial in the last few weeks of flower.
Min temp at lights out?
Yeah really.......prolly not the exact same, but this is mine.
http://www.ebay.com/itm/271054359124?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
My cab is 32" tall, so subtract pot height, light hangers, an actual plant growth,,,,,,less than 20" from canopy. My plants did great, but once they reached a cerain height,,,,,burnt! Mine is boxed upnow and I'll beselling it and getting a 250w hps instead
http://www.ebay.com/itm/271054359124?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
My cab is 32" tall, so subtract pot height, light hangers, an actual plant growth,,,,,,less than 20" from canopy. My plants did great, but once they reached a cerain height,,,,,burnt! Mine is boxed upnow and I'll beselling it and getting a 250w hps instead
M
Mr Piggy
Guest
True, but considering how much UV the sun puts off I doubt the little amount from the lights is the cause.
Similar threads
