Continuous yellowing and can't figure out why!

Mojave

Well-Known Member
They need some nitrogen badly....i think your mix is running low or your not giving enough. The light is probably still a bit too intense but not that bad....give her some N.
See I'm not sure though because I've been feeding them the Neptune's harvest flower/veg mix damn near every watering. Along with the top dress of "bumper crop" I did weeks ago.. Maybe having the high temps around upper 80s is critical? The gelato on the left jas been praying all the way through. I dialed the lights back to around 50% strength.

I'm sure I've screwed myself on a good yield. The Gelato is definitely going to finish at least a week orn2 later. I think next grow I'm gonna try a side by side with the CMH, using the same strains. And going back to big pots.. Tired of stressing

The tips are yellow a bit fried on the sugar leaves which makes mr think too much nitrogen but idk at this point.
 

myke

Well-Known Member
A couple things if you haven't tried.Get some good runoff on the next feed,could just be out of balance?pH could be way low with all that neptune food?
Just random guesses.
 

Mojave

Well-Known Member
Guess i gotta go digging for my PH meter.

Again, i appreciate the hell out all you guys for the help.
 

getogrow

Well-Known Member
You may have something blocking the N or maybe just inhibiting it a bit but N is for sure what she wants. I see what you are saying and if you back off the lights even more then they will green up some more...i would give a big boost of N and maybe even back off the lights even more....
 

Mojave

Well-Known Member
You may have something blocking the N or maybe just inhibiting it a bit but N is for sure what she wants. I see what you are saying and if you back off the lights even more then they will green up some more...i would give a big boost of N and maybe even back off the lights even more....
That's the only thing i can think of.. I wish i had a par meter so i could see what horsepower I'm working with. I think the lights are so bright. That when the temp dropped a bit back down to low 80s. It threw them back off, and they weren't able to metabolize the available nitrogen? I was thinking the low 80s would be fine coming from CMH in flower. But i think CMH just keeps the leaves much warmer like sunlight. So even if the ambient air is cooler, the plant stays trucking along. At least that's my theory. Along with not quite enough available N.

Is it detrimental giving too much N at this point? I'm around 45 days in
 

Fevs.

Well-Known Member
Switch to coco :cool: Problem solved :weed:

Battled yellow leaves for years in soil. Switching to coco was the best decision I made in growing. Canna coco a and b only will see your plants stay green forever! Easy street. Or stay in soil fighting this irritating yellowing issue :lol:
 

Fevs.

Well-Known Member
Get some garden worms and whack them in your soil this grow! Their shit will help green them up and help air in the soil.
 

getogrow

Well-Known Member
That's the only thing i can think of.. I wish i had a par meter so i could see what horsepower I'm working with. I think the lights are so bright. That when the temp dropped a bit back down to low 80s. It threw them back off, and they weren't able to metabolize the available nitrogen? I was thinking the low 80s would be fine coming from CMH in flower. But i think CMH just keeps the leaves much warmer like sunlight. So even if the ambient air is cooler, the plant stays trucking along. At least that's my theory. Along with not quite enough available N.

Is it detrimental giving too much N at this point? I'm around 45 days in
They need N thoughout the whole cycle ....they just need a bit less midway through flowering. Low 80's is not too cold.... it shouldnt be. They do better at 83 ish but i cant see the need to go up to 88 but it wont hurt if your strain likes it. The cmh will keep the leaves a bit warmer but not that much. any 80's should be fine.

Im still thinking too much light for your environment and feedings. Im running 25 watts a sq/ft and doing great.
 

getogrow

Well-Known Member
Is it detrimental giving too much N at this point? I'm around 45 days in
N is misused on this website. N should be the main ingredient almost to the end. Yes, way too much N will make them taste shitty and all kinds of things but just enough N will give you what your looking for. Since your only at 45 days , i would give them 2 nice doses of N in a row , then go back to your normal food.
 
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