Yellowing and dying fan leaves

Its the first day of week 8. Most of my plants have had yellowing and dying crisp brown leaves at the top of the colas for a few weeks and progressively getting worse to the point they are dead and having to remove them. The buds are nice and green with a LOT of sticky dank smelling trichomes. In and below the canopy is lush green with the normal yellowing leaves from the buds taking the nutes from them but trichomes still clear.

Im growing Fruit Punch, White Widow, G33, GMO, and Pink Kush. The plants are about 4 feet high and are scrogged in an 8x8x4 foot tent.

10-gallon fabric pots of fox farm ocean forest and a little lime on top.

Been watering them 2 to 3 times a week one gallon each alternating nutes and minimal runoff to take readings, however I just started one week ago watering them more 3 times a week, two gallons each and bumped up the bloom to 500 ppm going on each watering.

My lights are 4 of those cheap mars hydro T600s at 18 to.20 inches above the canopy.

From one month after roots developed I've been feeding them grow, micro, and bloom all equal amounts of N, P, and K 400 ppm total with a runoff between 1000 and 400 on some plants. Two weeks into flower i cut nitrogen.. week 5 i cut micronutes and have been feeding just bloom (phosphorus)

All plant runoff pH ranges from 5.8 to 6.8. 6.5 ppm in. I was feeding them less nutes and a bit higher pH because FFOF is a hot soil having bat guano, worm casings and potash and has a low pH

My RH during the day and night has ranged from 40 to 50, but most of the time lately its between 48 and 44 RH. However I rely mostly on VPD of 1.1 to 1.5.

What should I do at this point? Will this fix itself with the added bloom and more watering or am I SOL?

Underwatering and letting pots get to dry isn’t reversible but it sounds like you watering habits have improved
You will probably get a lot more yellowing on the road to finish

Herb & Suds said:

Underwatering and letting pots get to dry isn’t reversible but it sounds like you watering habits have improved
You will probably get a lot more yellowing on the road to finish

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So the top fan leaves are not a big deal and won't start having yellow sugar leaves and dying buds?

Nykodemuz said:

So the top fan leaves are not a big deal and won't start having yellow sugar leaves and dying buds?

Click to expand...

I never said that
I said what mistakes you previously made are irreparable
I also said you may have solved the issue by watering more

You have phosphate fixation of your soil.

Why did you stop the N in week 2, because it was in the FFOF already and batches can run hot?
Why would you stop micros? Like at all.

K, Ca and Mg have similar properties, and are taken up in a similar fashion, too much of one nutrient can inhibit the uptake of another nutrient. In your case the 3 part nutrient is formulated with calcium and magnesium nitrate. This is what caused your K deficiency.

Your using FFOF with a bit of lime, and a 3 part nutrient, and have been throwing P in addition to everything.
pH is a little wonky too, and I'd suspect the majority of flower further making things worse.

Only advise I can give is to finish her up and start over.

A 4 foot plant in a 10 gallon pot needs more than a gallon of water every three days.
I think you’re also using too many different nutes.
Plus you’re treating it like hydro but you’re in a soil mix.
A little mykos should be in your transplant next time. FFOF has some but it’s pretty dispersed in the mix.
You could water in Recharge with your feedings.
I mean it’s all fixable but it won’t bring back the dead.
Plants need more water and maybe half strength nutes. Whatever your main bloom one is.

drsaltzman said:

A 4 foot plant in a 10 gallon pot needs more than a gallon of water every three days.
I think you’re also using too many different nutes.
Plus you’re treating it like hydro but you’re in a soil mix.
A little mykos should be in your transplant next time. FFOF has some but it’s pretty dispersed in the mix.
You could water in Recharge with your feedings.
I mean it’s all fixable but it won’t bring back the dead.
Plants need more water and maybe half strength nutes. Whatever your main bloom one is.

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Hi,
I have used mykos with every transplant on every plant since cloning.

I do have recharge but I have not used any. I water two gallons each plant tomorrow and can give it to the plants at each watering moving forward.

The top fan leaves started dying before I switched to just bloom.

I cut out micronutes and nitrogen according to Kyle Cushman's video guide series.

The plants are not dead at all, its just fan leaves. The buds are still growing and they are green. The question is, will they produce THC and cloud up the trichomes, or am I stuck with clear ones forever now.

Nykodemuz said:

Hi,
I have used mykos with every transplant on every plant since cloning.

I do have recharge but I have not used any. I water two gallons each plant tomorrow and can give it to the plants at each watering moving forward.

The top fan leaves started dying before I switched to just bloom.

I cut out micronutes and nitrogen according to Kyle Cushman's video guide series.

The plants are not dead at all, its just fan leaves. The buds are still growing and they are green. The question is, will they produce THC and cloud up the trichomes, or am I stuck with clear ones forever now.

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Harvest when the calyx is swollen and the hairs receed in. You'll have a mix of cloudy and amber. Very few clear, but these will cloud up durring the dry.
Don't base the harvest day on trichomes maturity. Watch the hairs

something locked iron out and worse
the nute mix u feed is not at good ratios

Nykodemuz said:

feeding them grow, micro, and bloom all equal amounts of N, P, and K

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Are you referring too G/M/B as in General Hydroponics trio?

The latest GH feeding schedule below.

Bummer. Feeding just phosphorus fertilizer isn't going to fix anything.

rmax said:

Are you referring too G/M/B as in General Hydroponics trio?

The latest GH feeding schedule below.

View attachment 5104258

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I use general hydroponics nutes. Not the flora line, but the regular Grow, micro, and bloom.

Perhaps I can just go back to what the product recommends which is your chart but add to water half strength or 500ppm every other watering, and recharge during the no nute watering. I'm also thinking of trying to lower pH a bit to the upper 5s, lower 6s like 5.5 to 6.2 rather than keeping them at 6.2 to 6.8

Nykodemuz said:

Perhaps I can just go back to what the product recommends which is your chart

Click to expand...

I got the chart from Billy the Mountain over here: