Pls help me diagnose my problem, 5th week flowering

J

jjess21

Member
black cherry punch grown under led lights using soil and advanced nutes ph perfect. growth has been amazing the entire grow always looked great and grew super quick but now getting these pure yellow looking blotches on the leaves:leaf:.. temps are usually at 24c and humidity is at 30% ph at 6.5 always has been. thanks so much for any helpCFBFD8F9-783D-4C04-8DE8-E95D990C8332.jpeg408551FD-B917-4DED-ABE0-62A5C3F4B9E7.jpegCFBFD8F9-783D-4C04-8DE8-E95D990C8332.jpeg 408551FD-B917-4DED-ABE0-62A5C3F4B9E7.jpeg09AB6C0B-B6D3-46D5-9991-1D27BC8C0F19.jpeg
 
hotrodharley

hotrodharley

Well-Known Member
jjess21 said:
black cherry punch grown under led lights using soil and advanced nutes ph perfect. growth has been amazing the entire grow always looked great and grew super quick but now getting these pure yellow looking blotches on the leaves:leaf:.. temps are usually at 24c and humidity is at 30% ph at 6.5 always has been. thanks so much for any helpView attachment 4286249View attachment 4286251View attachment 4286249 View attachment 4286251View attachment 4286254
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Suggest raising your lights.
 
J

jjess21

Member
It’s happening on lower leaves as well.. and I did heighten the lights a week ago to 16 inches from 12 and it’s getting worse.. and do they look over or under nuted
 
J

jjess21

Member
Thanks man.. I put a lot of work into them.. terps are insane on these.. my first grow btw.. well. I’ve had a plant here and there but nothing real.
 
3rd Monkey

3rd Monkey

Well-Known Member
jjess21 said:
It’s happening on lower leaves as well.. and I did heighten the lights a week ago to 16 inches from 12 and it’s getting worse.. and do they look over or under nuted
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I would say that they look well fed. The lights seem close like Harley says, but I think you have an underlying issue too.

Do you ever fluctuate your ph, or always 6.5?
 
3rd Monkey

3rd Monkey

Well-Known Member
jjess21 said:
black cherry punch grown under led lights using soil and advanced nutes ph perfect. growth has been amazing the entire grow always looked great and grew super quick but now getting these pure yellow looking blotches on the leaves:leaf:.. temps are usually at 24c and humidity is at 30% ph at 6.5 always has been. thanks so much for any helpView attachment 4286249View attachment 4286251View attachment 4286249 View attachment 4286251View attachment 4286254
Click to expand...
Do you mind if I swipe some of your pics to show a colleague?
 
hotrodharley

hotrodharley

Well-Known Member
3rd Monkey said:
If it was light burn, why aren't the rest of the top leaves burnt, or even bleached?

I definitely see where you are coming from but Blitz and I were on another thread earlier with the same strange discoloration. The whole plant as well.
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It's not burn. It's light spectrum. The articles about it are pretty new. I got tuned in to this when the guy down the road switched to LED. But it's not heat. Most valid sources state LED should be 22"-30". It affects calcium greatly.
 
3rd Monkey

3rd Monkey

Well-Known Member
hotrodharley said:
It's not burn. It's light spectrum. The articles about it are pretty new. I got tuned in to this when the guy down the road switched to LED. But it's not heat. Most valid sources state LED should be 22"-30". It affects calcium greatly.
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Interesting...
 
J

jjess21

Member
Interesting indeed.. hopefully raising the lights to above 20 inches doesn’t effect yield or potency at all, would increasing air movement help when I already have a fan blowing on them? It’s on low though.. should I put it on high and risk wind burn?
leds don’t have the greatest penetration.. ps. you can use my pics for anything.
 
J

jjess21

Member
These lights are made a little weird.. half blue half red sprectrum with some 3000k and some 7000k white leds mixed in and some infrared diodes.. I’ve tried a pre mature nug I dried when I needed more space and it’s def going to be some potent stuff. Lights are only drawing 200 Watts each times 2 plus my homemade led drawing 80 Watts .. total 480 led Watts for 3 plants
 

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J

jjess21

Member
I test the drip off and if it fluctuates then I’ll go a little lower or higher till it hits 6.5 where soil can take most nutrients I assume.. the advanced nutrients tries to keep it a little low so I use a lot of potassium ph up and stopped doing so lately afraid of putting too much ph up in and drain off is around 6 now.. should I keep using a bunch of ph up¿

I use voodoo juice beneficial bacteria and I think they like a higher ph to thrive and organic molasses to feed those bitches.. anyways besides the little yellowing they are bulking really nicely fat dense nuts in top just using cheap ass bestvA lights on *mazon and a 2700k led light I made myself out of a bunch of screw in replacement leds with th plastic covering taken off to expose the leds and true kelvin Color, I’ll take a pic soon.
 
N

NwGKenny

Well-Known Member
what ph water are you putting in to get 6.5 run off?

if you are putting in water that is PH 8 or more and getting 6.5 then your growing medium is probably in the low 5's for PH
 
J

jjess21

Member
the run off is always between 6 and 6.5 and I always give it around 6.5 water.. but it takes a a lot of ph up to get it at 6.5( a lot of drips lol)..after I mix nutes it’s like 5.7 then I use the potassium ph up stuff
 
N

NwGKenny

Well-Known Member
jjess21 said:
the run off is always between 6 and 6.5 and I always give it around 6.5 water.. but it takes a a lot of ph up to get it at 6.5( a lot of drips lol)..after I mix nutes it’s like 5.7 then I use the potassium ph up stuff
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If you put in 6.5 and get 6 then i doubt there are enough salts built up in the medium to warrant a flush. Back off your PPM

The reason it is taking a lot of drops to raise the PH is probably because the PPM of your nutrient solution is so high.
 
J

jjess21

Member
I’ve been giving them half strength nutes always will go a bit lower now, thanks for the replies.. I’m not sure if I should give them straight water instead of there next feed scheduled.. every 3rd watering I give them around 3 ml per litre of advanced. Nutes 3 part.. THe weird thing about these nutrients I don’t understand is that you use the same ratio of each bottle (micro, grow, bloom) throughout all stages of growth..

would it help at all to back off the micro to cut nitrogen a bit? (Lots of good things In the micro though like all the amino acids and some kind of properatery bloom enhancers.. (thry do actually make a diff in terps for sure) thanks again
 
J

jjess21

Member
So soil is now dry and ready for a watering.. don’t know if I should feed or just straight-water or water with molasses.. afraid of burning them or messing with ph too much
 
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