3rd Monkey
Well-Known Member
If that's VPD, why is it hitting lower fans that aren't in the light? I don't see any signs on top that indicate a bad VPD.
Name That Deficiency
- Thread starter Big Perm
- Start date
If that's VPD, why is it hitting lower fans that aren't in the light? I don't see any signs on top that indicate a bad VPD.
Big Perm
Well-Known Member
3rd Monkey
Well-Known Member
Ah, right. My bad. So it's an LEDeficiency?
3rd Monkey
Well-Known Member
I don't think it's ph related after seeing full pics. Not at all.
Big Perm
Well-Known Member
Not sure, this is the 3rd time I have come across it though. Trying to track it down. I think it is a lockout. I did what DG said and went to a pH of 6.8 yesterday.
Kushash
Well-Known Member
Time will tell IDK.
If it was related to light it may have happened at an earlier date when maybe the light was to close.
Did you have the light closer a week or two ago then move it further away?
Yeah it seems like an uptake problem not input try some beneficial microbes out you are in coco with these right?
3rd Monkey
Well-Known Member
I'm in the camp that you went heavy handed on the nutes a bit. You can see it in the base of your upper leaves as well as the tips. It shorted mag a little bit too with those turned up tips.
All in all it's very healthy, but at 6.8... I feel like it's going to do worse for you. Just my opinions.
Big Perm
Well-Known Member
That is what I thought as well, went round and round with DG on the phone. I ended with, ok I'll raise it to 6.8 and see what happens. Didn't change anything else.
Big Perm
Well-Known Member
I did. I would still have it closer if it weren't in a comparison grow.
In another grow I had the same light at 4" with no ill effects.
Budzbuddha
Well-Known Member
Im going with septoria ..... ( AKA Black spot ) oily spots with lighter halo around edge.
Do i win a light ?
Second answer : vaginitis or anal leakage
Do i win a light ?
Second answer : vaginitis or anal leakage
Big Perm
Well-Known Member
You win anal leakage.
Budzbuddha
Well-Known Member
Great .... smh
Big Perm
Well-Known Member
Couple competitions starting in a few months you should get in on.
hotrodharley
Well-Known Member
Solid advice ^^! KISS and get bud.
hotrodharley
Well-Known Member
Potassium excess. We were discussing on another thread about potassium excess showing on plants under LED. I’m not sure if that’s valid but that’s what a couple were saying. Occurs more with blurples. Just a guess from the leaf.
Add: old memory. This came up trying to address a calcium deficiency. Apparently utilization of potassium under some lights is decreased causing an excess. This excess causes calcium to be blocked. But I’m not a botanist.
Last edited:
Kushash
Well-Known Member
Curious!
VPD was 1.1 when the plant was about 18" + away from the light.
What was the VPD when the light was 4" away from the plant?
What was the VPD when the light was 4" away from the plant?
Big Perm
Well-Known Member
Same, but my sensors are at the canopy level for temp and humidity. They are controllers, so they do their thing.
