Deficiency in terminal growth points

  • Thread starter Dubiousjay
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Dubiousjay

Dubiousjay

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Did a nutrient change out and switched bulbs to hps a day ago for flower. On the upper terminal points I am now Noticing burnt tips and the edges of the effected leaves and turning light while the areas around center vein remain dark. Looks like zinc or mag problem maybe. Any thoughts?


Leaf surface temp 68f
ppm is a bit higher for week 1 500ppm
Ph 6.0
 
Deficiency in terminal growth points
Dirtbag

Dirtbag

Supporter
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What's your runoff EC? Looks like it's just getting a bit too much food.
 
Dirtbag

Dirtbag

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Wha are you using for nutrients? What is the makeup of your nute solution including water etc?
It's hard to pin down a specific nute deficiency from that pic, it's just not advanced enough for a diagnosis. It would be easier to see if there is something wrong with the nutrient solution composition or environment.
500 ppm shouldnt be too hot for DWC.
ph is a bit high though.
 
Dubiousjay

Dubiousjay

3
1
whatever it was it seems to have been associated with the change out. Growth is back to normal with just a few burnt tips for damage.
 
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