full strength jacks and a pk booster. and having phosphorus deficiencies?

[rollitdown321]

yeah, ive let this get bad. but id like to fix now, or know how to fix next run

todays day 40. i still have approx 3 weeks left of flower

i have a fuckton of airflow thats the reason for some dead leaves and premature orange hairs.

running coco with jacks and calimagic (and a pk booster called flower fuel) flower ph of 6.2-6.3

also running dripkleen

temps 77 lights off and 82-84 lights on

humidity approx 50 ±3

c02 1300-1500 ppm lights on approx 600 lights off

im in coco, i feed every watering and water every day. in my res (55gal) i give a full dose of jacks which from jrpeters is supposed to be 2-2.4 ec depending on water quality

after adding jacks, i add a full dose of flower fuel, an a full dose of calimagic. then i have to ph up to 6.2-6.3

my ec in my res is 2.6. my tap water has an ec of .1

but i also am running 660w of lights per 4x4 and 1300-1500 ppm c02

you think im under feeding?

 

[HydoDan]

No you're not under feeding.. Looks N toxic to me.. burnt tips and some claw..

 

[michojay]

I’d lower your EC if anything. I feed the same thing as far as jacks and flower fuel. I use the flower fuel at about 2/3 recommend and feed jacks at 4 grams A and 2 grams Cal/Nit about 1.9 EC and my starting EC is about. .3 (well water) I recently dropped the Cal/Nit and am running Cal/Sul to drop the Nitrogen down and I’m about 2-3 weeks from finish. Not sure if any of that helps but it has worked for me. Also I agree with the above statement they look N toxic

 

[rollitdown321]

I’d lower your EC if anything. I feed the same thing as far as jacks and flower fuel. I use the flower fuel at about 2/3 recommend and feed jacks at 4 grams A and 2 grams Cal/Nit about 1.9 EC and my starting EC is about. .3 (well water) I recently dropped the Cal/Nit and am running Cal/Sul to drop the Nitrogen down and I’m about 2-3 weeks from finish. Not sure if any of that helps but it has worked for me. Also I agree with the above statement they look N toxic

why did you take out cal/nit? were you having ussues or just wanted to cut down on nit?

 

[Actinolite]

Are you using a lot of pH down (or any phosphoric acid for pH adjustments) or something? Looks more like a toxicity than a deficiency to me. Either that or your ratios are way off and causing lockout.
Either way you're pretty deep in to whatever is going wrong

 

[michojay]

why did you take out cal/nit? were you having ussues or just wanted to cut down on nit?

Because I want to limit the amount of N in late flower