Need Advice

[DKgrowWeed]

I am about 5 weeks into the flower cycle of Girl Scout Cookies and Cactus Cooler and plan to harvest in approximately 2 weeks. I’ve been adding Fox Farm Big Bloom, Fox Farm Grow Big, Fox Farm Tiger Bloom and General Hydroponics CaliMagic to each watering about every 3 days. PH has been adjusted to 6.4 and soil is good at 6.8. Using LED Spider Farmer G5000 light at 90% dimmer setting. The brown spots started on the Cactus Cooler but the leaves on the bud are worrying me. Is this simply a case of too much nutrients? Ant help appreciated

 

[SoOrbudgal]

Yes too many different nutrients. You will loose all those damaged leaves. Classic case of over feeding.

 

[Bowhunterwoody]

Agree with budgal on this one. When I used their trio I used it at half strength and every other watering in soil. So I basically fed them once a week with just water in-between. Plus in flower your supposed to skip the Grow Big every other week. Still had a small amount of nute burn.

 

[Allotrope1000]

Agree with Budgal and Bowhunter. May I offer a simple nute trick I use?
I use half strength GH Trio in 50/50 coco/ perlite, pH'd to 6.0 - 6.1. I VERY carefully monitor the leaf tips for the browning indicating nute burn. When, if, I see this on one of my 10 - 12 plants, I immediately use only water for a couple of days then restart nutes at an even lower dose. Have never had a problem like your pictures.

 

[DKgrowWeed]

I am not loving the outcome. Is this what to expect of you get nutrient burn or could this possibly be bud rot? I reduced the feeding down to pH 6.4 for three feeding then went to half dose of nutrients and now the buds look like they are dying. My guess?

 

[DKgrowWeed]

I am not loving the outcome. Is this what to expect of you get nutrient burn or could this possibly be bud rot? I reduced the feeding down to pH 6.4 for three feeding then went to half dose of nutrients and now the buds look like they are dying. My guess?

 

[golfnrl]

When you water to runoff, what is the PH running for the affected plant?

 

[DKgrowWeed]

6.3 ph coming out of the runoff

 

[golfnrl]

That number is certainly in range. I was thinking root zone PH might be causing an N lockout.

You mentioned bud rot. Have you checked that? If you find any at all remove the entire plant from the grow area ASAP. I tried to save the unaffected parts of a plant suffering from bud rot and ended up contaminating the entire harvest. Not worth the risk.