what to do for led bleaching?

[Smokenpassout]

I notice that some of my tops are getting slightly bleached, from the led's intensity. I was at a 6" flowering height, and I adjusted it up to 10". Is that the best remedy? Does the led bleaching damage the bud, or make it mature too fast? I notice some amber trichs already in the bleached area, although I easily have two weeks left.

 

[SupraSPL]

Bend the tall ones over to keep your canopy even or in the coliseum shape to catch the light at the edges.

 

[Bad Karma]

I notice that some of my tops are getting slightly bleached, from the led's intensity. I was at a 6" flowering height, and I adjusted it up to 10". Is that the best remedy? Does the led bleaching damage the bud, or make it mature too fast?

Raising the light is the easiest fix, but what Supra said above would work too, it would just take more effort.
Bleaching does not damage the bud, it just halts chlorophyll production in the effected areas, hence the white plant matter instead of green.
Just keep growing as you are and things should be fine, good luck.

 

[SnotBoogie]

Am i right in inferring from SDS post that dropping ambient temps would combat bleaching?

 

[Smokenpassout]

Lol @ me for being paranoid to bend anything. I will take your advice as I want to further pentrate the smaller flowers.

 

[Smokenpassout]

Raising the light is the easiest fix, but what Supra said above would work too, it would just take more effort.
Bleaching does not damage the bud, it just halts chlorophyll production in the effected areas, hence the white plant matter instead of green.
Just keep growing as you are and things should be fine, good luck.

Very interesting about halting chlorophyll. I am still new to led, and am starting to realize how powerful they are. I started at 12" and as my girl grew, I noticed led's were at 6" after she stretched. I figured 6" would be maximum penetration for flowering. Then I noticed the slight bleaching at the tops of some main colas! Glad I caught it early and can heed your advice. Now I will just keep the leds at 10-12" and flush.

 

[Smokenpassout]

Am i right in inferring from SDS post that dropping ambient temps would combat bleaching?

My temps run about 75 to 78 with about 40 percent humidity. The biggest advantage to led was the temp drop.

 

[Mechmike]

I notice that some of my tops are getting slightly bleached, from the led's intensity. I was at a 6" flowering height, and I adjusted it up to 10". Is that the best remedy? Does the led bleaching damage the bud, or make it mature too fast? I notice some amber trichs already in the bleached area, although I easily have two weeks left.

I LST mine and also use a light mover. Using the mover has the added advantage of getting light more evenly distributed over the entire canopy. Since the canopy is even and the light keeps moving, I can keep it within an inch of the tops without any bleaching while getting the most out of every photon.

 

[BeastGrow]

A lot of LEDs are meant to be around 14" from canopy

 

[Smokenpassout]

A lot of LEDs are meant to be around 14" from canopy

Yes I think 12" to 14" is optimal. I think any less height is too intense, and will start bleaching.

 

[cannabiscultivation]

so....this is too close then?

 

[GreenSanta]

dont bend while flowering (stress during budding increase chances of your plants hermiing on you...) and follow manufacturer;s recommendation, check out my journal, i keep my lights about 24'' from the tops and get great results

 

[Smokenpassout]

dont bend while flowering (stress during budding increase chances of your plants hermiing on you...) and follow manufacturer;s recommendation, check out my journal, i keep my lights about 24'' from the tops and get great results

Ok I am more comfy backing off lights then bending

 

[Smokenpassout]

View attachment 2603335

so....this is too close then?

wowsers that is close! How close it that? Your thoughts on height?

 

[SnotBoogie]

I have my panels around 8in away from canopy personally

 

[mamakush]

I like 18 inches for my 750 watt panels, myself. What wattage are those panels?

 

[cannabiscultivation]

I like 18 inches for my 750 watt panels, myself. What wattage are those panels?

Mine are 135s and 300s

maybe 6 inches

 

[slinger36s]

I too have some light bleaching but it didn't affect the tallest main colas first was 2 shorter colas. Lights were 8 in away 2 x 300 watt panels. Raised them up to the top of the tent making them about 14 in away. Now I'm getting slight bleaching on the tallest colas haha, no room to bend branches so I guess I'm gonna be enjoying some white purple cadillac. This is my first led grow as well man, I'm sure the white nugs will smoke just as well as the green ones. So basically everyone that said move your lights back are correct, given you have room in your space to raise them higher.
Best of luck!
-slinger

 

[tarks]

You waste alot of light by having them close , Anything above 9'ish inches is good. Having them upclose just keeps the light focused into a small area reducing your overall potential coverage. They look pretty good though.

 

[Smokenpassout]

You waste alot of light by having them close , Anything above 9'ish inches is good. Having them upclose just keeps the light focused into a small area reducing your overall potential coverage. They look pretty good though.

I agree 12" or more is a wider better footprint. Less intensity would be less bleaching. I have two 350 watt led lights, so raising them to 12" would be more than adequate for a single plant lol.