how much light is too much light???

HOMEGROWN4DE

HOMEGROWN4DE

Well-Known Member
I have read a few posts today on this and was just wondering if any1 could explain this. I started growing recently using cfl's and I'd be very intrested in that subject but any info on any lights I'm sure would be helpful to many ppl!
what u got???
 
HOMEGROWN4DE

HOMEGROWN4DE

Well-Known Member
I got a 250w red on her and 3/20w I now this isn't too much light I was just intrested in the topic, u can never know too much!! lol
 
HOMEGROWN4DE

HOMEGROWN4DE

Well-Known Member
I found this on another post:

PLANT MOISTURE STRESS - symptoms and solutions (revised Jan. 12, 2009)

High Light - yes, it’s true, you can give our faves too much light. Cannabis does not receive full sun from sunrise to sunset in its natural state. It is shaded or given reduced light levels because of adjacent plant material, cloudy conditions, rain, debris and dust collection on the leaf surface, twilight periods of early morning and late afternoon, and light intensity changes caused by a change in the seasons. Too much light mainly serves to bleach out and destroy chlorophyll as opposed to causing leaf cupping, but it often goes hand-in-hand with high heat for indoor growers. Again, back off on the light and concentrate on developing/maintaining an efficient and robust root system. Keep in mind that all but equatorial material receive less light during flowering than during the vegetative stage.
 
bobbyhopefeild

bobbyhopefeild

Active Member
HOMEGROWN4DE said:
I found this on another post:

PLANT MOISTURE STRESS - symptoms and solutions (revised Jan. 12, 2009)

High Light - yes, it’s true, you can give our faves too much light. Cannabis does not receive full sun from sunrise to sunset in its natural state. It is shaded or given reduced light levels because of adjacent plant material, cloudy conditions, rain, debris and dust collection on the leaf surface, twilight periods of early morning and late afternoon, and light intensity changes caused by a change in the seasons. Too much light mainly serves to bleach out and destroy chlorophyll as opposed to causing leaf cupping, but it often goes hand-in-hand with high heat for indoor growers. Again, back off on the light and concentrate on developing/maintaining an efficient and robust root system. Keep in mind that all but equatorial material receive less light during flowering than during the vegetative stage.
Click to expand...
try to get a blue bulb for veggin as there simply isnt as much photosynthetic active radiation in the red spectrum during veg. And seedling can hav too much light but i personally hav never heard of too much lights,dont believe all you read in rollitup, i read this this thing about damaging the braches by twisting the branches and that is makes the plant stronger; this is complete shit, the analogy was with a human muscle, plant cells and human muscle cells arnt the same, the plant will be stressed and take a while to recover when it cud hav just used that time more efficiently to grow bigger rather than repairing.i believe this was called 'supercropping' i think. dont do it! Theres nothing in plant biology that suggests this is anything else but damaging your plant.
Although that is true that plants don't recieve a high concentration of light all the time , for optimum growing levels the more the better. Although personally i swear by 18/6 for veg, i can see how on 24/0 it could damage the plants to hav too much light as you cud stress it by it not having a good enough root system to support that growth.
That bit about it natrually havin less light in flowering isnt necessarily true, pure sativas in the oriental tropics can flower for up to 4 months and their light isnt gunna be any different from veg. as i said , parts of rollitup are gud but other bits are shitty stoner myths.
hope that helps
 
HOMEGROWN4DE

HOMEGROWN4DE

Well-Known Member
I only have red on her coz she been in flower for a wk now! I had to repot her today as I was having problems with curling leaves, I was told to repot in a larger container with a mix of soil perlite as it seemed to be a drainage problem, atleast I hope I solved it. just hope I not been told the wrong thing????
 
desertrat

desertrat

Well-Known Member
midday sun at the equator is 10,000 lumens per square foot. recommended light for weed is 7,000 to 10,000 lumens per square foot of growing area.

for choosing lights:
cfl 13 actual watts/60 equivalent: 850 lumens
cfl 26 actual watts/100 equivalent: 1,750 lumens
cfl 42 actual watts/150 equivalent: 2,750 lumens
cfl 68 actual watts/250 equivalent: 4,200 lumens
hps 150 watts: 16,000 lumens
hps 250 watts: 28,000 lumens
hps 400 watts: 55,000 lumens
hps 600 watts: 95,000 lumens
hps 1000 watts: 145,000 lumens
 
riddleme

riddleme

Well-Known Member
bobbyhopefeild said:
try to get a blue bulb for veggin as there simply isnt as much photosynthetic active radiation in the red spectrum during veg. And seedling can hav too much light but i personally hav never heard of too much lights,dont believe all you read in rollitup, i read this this thing about damaging the braches by twisting the branches and that is makes the plant stronger; this is complete shit, the analogy was with a human muscle, plant cells and human muscle cells arnt the same, the plant will be stressed and take a while to recover when it cud hav just used that time more efficiently to grow bigger rather than repairing.i believe this was called 'supercropping' i think. dont do it! Theres nothing in plant biology that suggests this is anything else but damaging your plant.
Although that is true that plants don't recieve a high concentration of light all the time , for optimum growing levels the more the better. Although personally i swear by 18/6 for veg, i can see how on 24/0 it could damage the plants to hav too much light as you cud stress it by it not having a good enough root system to support that growth.
That bit about it natrually havin less light in flowering isnt necessarily true, pure sativas in the oriental tropics can flower for up to 4 months and their light isnt gunna be any different from veg. as i said , parts of rollitup are gud but other bits are shitty stoner myths.
hope that helps
Click to expand...
there is very definately a such a thing as too much light, you can simply google light bleaching and look at the pic's

recently I have seen a grow where the buds furthest from the light were bigger and frostier

I just posted in a thread where another grower noticed this as well

I have been telling people this forever, less is more it is wrong to think that more light is better
 
HOMEGROWN4DE

HOMEGROWN4DE

Well-Known Member
I was told the 250w red cfl produces 19500 lumens that y I bought it, altogether I think I got 23,300 lumens which is far from how the grow started. I stared her in my window and under 1/20w cfl at night, sunlight has gotta be best when it's possible ofcourse!
 
HOMEGROWN4DE

HOMEGROWN4DE

Well-Known Member
I read somthing like that earlier, maybe the top bud is growing over the leaves so the leaves can't get enough light? just a thought. maybe the lower leaves get more light to them coz the lower flowers grow on the branch not all over the leaves?? just throwing that out there!!
 
bobbyhopefeild

bobbyhopefeild

Active Member
riddleme said:
there is very definately a such a thing as too much light, you can simply google light bleaching and look at the pic's

recently I have seen a grow where the buds furthest from the light were bigger and frostier

I just posted in a thread where another grower noticed this as well

I have been telling people this forever, less is more it is wrong to think that more light is better
Click to expand...
interesting, ive always found more is more , once the plant is very healthy and established. so how much is too much?? cuz in the indoor bible by jose cervantes , it says 27000 lux for veg and 107000 lux for flowering for optimum growth, how much light did this other grower expose to his plants when they began to bleach??
ive never really thought about too much light as i personally prefer cfl's and rarely use hps so a reply would be much appreciated!
 
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