help tip of leaf is turning yellow with pics

420inNC

420inNC

Well-Known Member
My little seedlings are all doing good but this one. They are in a humidity dome the temps stay at 85f and the humidity is 93%. On this one both leaves on the tips are turning yellow any one can tell me whats wrong with this one? I dont use any nutes yet only water that is 5hp-6ph wanting on the digital ph tester. And the little round leaves are turning yellow to but that happening to all the little ones so i think that is normal but i dont know
 

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Boneman

Boneman

Well-Known Member
You lil seedling is doing fine....Its probably about time to get rid of the humidity dome
 
420inNC

420inNC

Well-Known Member
cool if i get rid of the humdity dome my humdity only gets to about 45-50% is that ok and can i use mh blub on these seddlinns and how far from them
 
Cr8z13

Cr8z13

Well-Known Member
Your humidity is fine and keep the seedlings at least a few feet away from the MH bulb. They don't need much light at all at this stage.
 
rasclot

rasclot

Well-Known Member
my plants done the same the tips started going yellow i didnt have any ventilation so the heat from my light was cooking them
 
M

MOONSTAR8595

Active Member
I have the same type of problem going on (plus leaves turning slightly upwards on 2 plants). I am trying to figure out why and if it is a real concern or not. I've heard lack of Iron and Manganese could be the culprit. Or it could be high humidity. I wish someone who knows could shed some light.
 
mauichronic808

mauichronic808

Well-Known Member
dmoneysaver said:
Little Jonny has to be in a field now with the rest of his kind they grow up so fast.
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what? and also looks like whatever your giving it, its getting too much nitrogen thats what my plants looked like but once i cut off the tips with burn on them ( maybe dont do this) they were doing fine! just let it pass see if it gets worse.
 
420inNC

420inNC

Well-Known Member
ok now i think its getting wores heres some pics tell me what you think by the way the temps was in the 89-91 range but now in the low 80sF and low 70sF in the dark and the hum. is in the 35% range
 

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rasclot

rasclot

Well-Known Member
mine done exacly the same thing it come down to heat there fine now watch my journal its called blue cheese and jamaican lambsbread!
 
doogleef

doogleef

Well-Known Member
They are hungry. That is a classic Mg and N deficiency. The 6" rule is good for soil but in an inert media (Rockwool or Hydroton) they need food.
 
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