Focused on cal mag def, but could it be lights?

farmerjoe420

farmerjoe420

Well-Known Member
I just checked the specs. That light gives off over 2900 umol so at 70% your at close to 2000 at 26 inches from the canopy. Those plants are going to fry if you don’t fix that. It’s an extreme amount of light for that small of a plant. I would at least dim to 40-50% and raise to 3 ft or higher for now. Those plants won’t get better with that amount of light and the stress they have endured
 
rkymtnman

rkymtnman

Well-Known Member
farmerjoe420 said:
I just checked the specs. That light gives off over 2900 umol so at 70% your at close to 2000 at 26 inches from the canopy. Those plants are going to fry if you don’t fix that. It’s an extreme amount of light for that small of a plant. I would at least dim to 40-50% and raise to 3 ft or higher for now. Those plants won’t get better with that amount of light and the stress they have endured
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good point. turn off CO2 too (if using)

and double check your roots too. this stress + root rot and those plants wont' have a chance.
 
BurntByFire

BurntByFire

Active Member
farmerjoe420 said:
I just checked the specs. That light gives off over 2900 umol so at 70% your at close to 2000 at 26 inches from the canopy. Those plants are going to fry if you don’t fix that. It’s an extreme amount of light for that small of a plant. I would at least dim to 40-50% and raise to 3 ft or higher for now. Those plants won’t get better with that amount of light and the stress they have endured
Click to expand...
Yes exactly. Thats what I was saying, I was focused on calmag deficiency and trying to diagnose when I think 95% of my issue was the lights.

Right now I'm at 45% at 35"
I did some LST incase I need to veg another week.
(Already day 24 veg)
So now nutes will be lowered, lights are dialed In let's see what a week does.
 
BurntByFire

BurntByFire

Active Member
rkymtnman said:
good point. turn off CO2 too (if using)

and double check your roots too. this stress + root rot and those plants wont' have a chance.
Click to expand...
PH is swinging up nicely
PPM is going down as it should
Looked at roots and there's no smell, no slime etc.
They are brown but if you've used Remo you know the colors are deep and my water turns pink/orange so the roots are absorbing color.

So I'm sure no root rot

Wayer is 67 so no pith.
 
rkymtnman

rkymtnman

Well-Known Member
BurntByFire said:
PH is swinging up nicely
PPM is going down as it should
Looked at roots and there's no smell, no slime etc.
They are brown but if you've used Remo you know the colors are deep and my water turns pink/orange so the roots are absorbing color.

So I'm sure no root rot

Wayer is 67 so no pith.
Click to expand...
everything else sounds good.

i only once needed to go above 1.2 EC ever in dwc/rdwc.
 
BurntByFire

BurntByFire

Active Member
rkymtnman said:
i feed mine 2 x a day at 0.8 to 0.9 EC. and .2 of that is my well water
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Speaking of well water...
You find well wayer goes bad quicker?
I was on chlorinated city water and never had issues
Moved out to the country on well water and the wayer goes bad real quick.
You adding bennies or h202 or just keeping wayer temps below 68
 
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