HELP! Sugar leaves on buds turning brown week 7

[Zigman]

I am nearing the end of week 7 seven of flowering and the leaves on my buds are turning brown rapidly. It's starting at the tips and moving in towards the bud. I'm concerned about letting them go to full maturity. If I do let them go the fulll 60-65 days I'm worried they will go completely brown. Will the buds still be good? Thoughts suggestions? Any idea what could be causing this?

[OldManGrower]

You have severe PH imbalance, nutrient burn and possibly light burn. You give no details as to what you are using in terms of nutes, watering schedule, lights, grow medium, PH etc which makes a complete diagnosis impossible. But, to take a stab, flush the plants with water PH'd to 6.5 with cal mag. Next watering, after the pots have dried out, resume using nutes at 1/2 strength with cal,mag and water at 6.5PH. You may save part of your crop. Without any grow info i cannot offer any further help.

[OldManGrower]

Read the following: https://www.growweedeasy.com/link-gu...owing-cannabis

[Zigman]

I'm using a spider farmer SF4000 in a 4'X4' tent. The light is 32" away from the plants and at full power. These are Acpoulco Gokd plants. The plants are in 3 gal cloth pots with happy frog soil. I have been using Pureblend Pro bloom for nutirent. The plants had been getting 1.25 quarts of water every other day with 2 teaspons of nutrient each. I have been mixing in PH plus with the water nutient solution to raise the PH to 6.5. This week I backed down to 1 teaspoon of nutient for the last two waterings and I was about to begin my preharvest flush. I typically do that for 2 weeks prior to harvest.

[Gingerbeard]

I'll bite the pH issue. But consider it is normal for some plants to brown up the leaves.

[Zigman]

So do you think the buds will still be good if I give it another 2 weeks?

[Zigman]

Gingerbeard do you think the buds will still be good if I give it another 2 weeks and flush with PH balanced water and no nutirent?

[Gingerbeard]

Keep an eye on the trichomes, watch for bud rot. I will not comment on the flushing bit as I have and have not flushed. I do not notice a difference.
Balanced pH can only do good.
Take a look at the link OldManGrower posted. It's like reading someone's master's thesis.

[Bluey]

It's difficult to keep bud rot away when your buds start to go like that. What temps and RH are you getting? The light isn't the issue at 30" above the canopy.
Appears more pH and nute problem related. Are you measuring EC?
RE those air pots and soil. Those are small pots. If the soil is drying out between waters it could also be causing nute/root problems. I am not familiar with that "soil" but I'd be guessing the plant is now reliant on you for nutes given pot size and type of pot.

[Zigman]

Temp is around 70 - 72 degrees RH 45%. I think I am going to harvest the one that is in the worst shape now. In looking at the trichomes they are cloudy enough and there are a some yellows mixed in. I think you might be spot on with the size of the pot. I only grow them to about 2 - 2.5 feet so I figured for a plant that size 3 gal was enough, But I think I'm going to start using 5 gal moving forward.

[SoOrbudgal]

I've grown many a photoperiod in 3gal fabric pots. I also believe they were over fertilized. I learned long time ago not to pump the ferts to quickly less is the best and it's the last few weeks of flower that they plump up naturally. Try it with at least 1 plant next time use less ferts

[Bluey]

You will increase your yields using a 5gal over a 3gal for sure.

You're growing pretty decent sized plants and cropping & training for maximum yield so it won't hurt.

As SoOrbudgal says..keep a close eye on the ferts/nutes. Measure EC on the inputs for good management.