Leaves yellowing from middle and tips twisting to the side

tobinates559 said:
im sick of people like you trying to give advice! you need some experience to give some good advice...if you knew anything you would know that light had nothing to do with it
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Are you tryin to give advice to the OP? No...Well then don't bitch at someone who at least tried to help, what you are doing is childish and needs to be rethought on your part...peace...
manganese said:
Ok, just a recap first:

Oct. 22nd (day 35)- First dose of nutrients, 1/4 strength flower for all plants.
Oct. 25th (day 38)- 1/4 strength flowering nutrients for all plants.
Oct. 26th (day 39)- Started this thread.
Oct. 28th (day 41)- 1/2 strength flowering nutrients for all plants with just under 1 tablespoon per gallon of epsom salt per gallon.
Oct. 31st (day 44)- Watered all with 2.5 teaspoons of epsom salt per gallon water.

The plants don't seem to be doing any better. The front right one has started developing a light green color. The one in the back which was fine when I started this thread has started getting the yellowing upper leaves and some light green ones are developing. The front left one looks like it has the healthiest overall color.

View attachment 2879175View attachment 2879176View attachment 2879177View attachment 2879178

I'm noticing a small amount of brown tips on some of the leaves. I haven't given them plain water since I started the first dose of 1/4 strength nutrients. Is this nutrient burn/buildup? Do I need to flush or am I just not giving enough nutrients still? I also raised the lights some, that didn't change anything.
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Reguardless of what people are telling you to do...it does look like a heat issue...your lights may be too close or you don't have good circulation in your room...and I really didn't look at the list of nutes when/how much...but they are being fed too much by looking at your leaves, back of the nutes and bring that epsom down to a teaspoon a gallon...and you need to "just" water sometimes to rinse out the old nutes, they build up salt over time and will give you a serious toxicity from wich there's no return (at this point) so just water them with about a gallon each and let them set for 2-3 days and see...it patients my friend, that wins the game...good luck and welcome to RIU...
 
1. I can help...when in doubt flush it out!!!! 1/3-1/2 strength with great runoff....more than necessary....runoff 25% about and cut the Epsom salt you may be causing a lockout with too much sulphur and magnesium whereby calcium and nitrogen will become locked. I am thinking deficiency, when too much of one nutrient is used it fails to catalyze others. They need each other in usable proportion and Ph with fulvic acid and seaweed will strengthen these and hopefully restore them to a satisfactory level. Listen to the guy upstairs......cut the heat.
 
Ok, so the general consensus is that my pH is too high and I need to back off of the nutrients. Adjust the pH to 6.5 for FFOF and do a flush too, with 1 gallon per plant?

Should I just go ahead and flush them tonight? Tomorrow morning is when they would normally get watered.

Also, I really doubt it's heat stress. I've done two grows previous to this and have seen heat stress from the light being to close, and usually the first sign is burnt pistils at the top of the cola. I'm not seeing that with these plants. It's a small tent with a 170cfm fan running at almost full capacity and I have a 6 inch fan blowing directly across the tops of the plants. On top of that, I'm keeping it a bit chilly in the room the tent is in.

I really appreciate the help everyone. Believe it or not, this is looking like it's going to be my highest yielding grow yet :bigjoint:
 
burgertime2010 said:
1. I can help...when in doubt flush it out!!!! 1/3-1/2 strength with great runoff....more than necessary....runoff 25% about and cut the Epsom salt you may be causing a lockout with too much sulphur and magnesium whereby calcium and nitrogen will become locked. I am thinking deficiency, when too much of one nutrient is used it fails to catalyze others. They need each other in usable proportion and Ph with fulvic acid and seaweed will strengthen these and hopefully restore them to a satisfactory level. Listen to the guy upstairs......cut the heat.
Click to expand...

The pics are much better now.

Agreed. Best soultion is too always back away from feeding with a 1/4 strength flush then seeing how they respond after a a few days. Backing the light away relieves any more potential problems while seeking a solution.. Its always easy to bring things back up. Other than that the plants looked like they were really ripping along till this problem and they are far away from a serious deficiency problem from the looks of it. You should pull this one off. Best of luck


....and thanks to the other posters that came to my defense. Its hard diagnosing without all the essential info but we're making practical suggestions and nothing we're offering is going to magnify the problem if the suggestions are properly followed.
 
It hasn't been long since I flushed but it looks like they're doing better. The fading leaves on the one in the back seem to be greening up, the one on the left isn't developing any more yellowing, and the one on the right is still looking pale but doesn't look any worse than it was. They still have a bit longer to go, can't wait.
 
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