Lights too close?

[migenetics]

First grow with led's, just wondering if these are signs of my light being too close or just a batch of hot soil (my guess). Also if it's not light stress can someone show me a pic of led's being too close. Thanks

 

[berten-ernie420]

They bleach when too close. Yours looks good. Need to get in there n clean out some of those fan leaves tho. Looks like u have decent node spacing, quite a few inches between the bottom branches, and about an inch or less as you get closer to the top. Depending on how tall you want your plants, adjust your height of the light higher or lower. What kind of leds r they?

 

[berten-ernie420]

They are still going to stretch as with hid. So account for that, usually with any leds, you keep it on low for veg, and either slowly adjust the power up or smack it all on at once when you flip. I prefer the fast and hard approach. But on second glance, the tops do look a bit stressed. I'd pull up back. I keep my cobs anywhere from 24-42 inches away from my tops in veg and just let the plants grow and fill into them. I prefer lst and topping to achieve as many tops as possible, opposed to Christmas tree style plants (1 main cola, bunch of side nuggets). How far away from the plant are the lights?

 

[MedicinalMyA$$]

Maybe a heat or transpiration issue. Sometimes the roots cannot draw enough water because there isn't enough water, too much water, or the root mass isn't developed enough to keep up with demand. If they are not under or over watered and temps are OK you can try backing the light off a bit to reduce water demand and/or give the roots time to catch up.

 

[migenetics]

They bleach when too close. Yours looks good. Need to get in there n clean out some of those fan leaves tho. Looks like u have decent node spacing, quite a few inches between the bottom branches, and about an inch or less as you get closer to the top. Depending on how tall you want your plants, adjust your height of the light higher or lower. What kind of leds r they?

4 Qb96's at 100watts each in a 4x4

 

[migenetics]

They are still going to stretch as with hid. So account for that, usually with any leds, you keep it on low for veg, and either slowly adjust the power up or smack it all on at once when you flip. I prefer the fast and hard approach. But on second glance, the tops do look a bit stressed. I'd pull up back. I keep my cobs anywhere from 24-42 inches away from my tops in veg and just let the plants grow and fill into them. I prefer lst and topping to achieve as many tops as possible, opposed to Christmas tree style plants (1 main cola, bunch of side nuggets). How far away from the plant are the lights?

That's normally what I prefer as well but this run I had to go SOG unfortunately. Lights are about 16 inches away from most plants and around 20 for the shortest ones.

 

[migenetics]

Maybe a heat or transpiration issue. Sometimes the roots cannot draw enough water because there isn't enough water, too much water, or the root mass isn't developed enough to keep up with demand. If they are not under or over watered and temps are OK you can try backing the light off a bit to reduce water demand and/or give the roots time to catch up.

I think you nailed it with the root mass not being developed enough yet. I just transplanting last week and threw them right into flower under the new led's.