Help with purple grey drying out leaves

[LiterallyLiterary]

Problem: leaves discoloring and dying. Medium/grow method: Coco Perlite Hempy Bucket

Feed: and supplements used: Tomato nutrients three part, Roots Xcelluratur, silica, drip clean, spray n grow

water source:tap.

Strain/age:blackjack auto that didnt auto. 2 months

light used: hlg 260

Climate:77 F...humidity 50

Additional info:
2 other plants treated similarly doing considersbly better? The leaves are getting yellow and drying up with a purple brownish color all over the plant. Am i using too much spray n grow micronutrients? Thanks for helping.

 

[LiterallyLiterary]

More pix

 

[beaubud]

View attachment 954409 Problem: leaves discoloring and dying. Medium/grow method: Coco Perlite Hempy Bucket

Feed: and supplements used: Tomato nutrients three part, Roots Xcelluratur, silica, drip clean, spray n grow

water source:tap.

Strain/age:blackjack auto that didnt auto. 2 months

light used: hlg 260

Climate:77 F...humidity 50

Additional info:
2 other plants treated similarly doing considersbly better? The leaves are getting yellow and drying up with a purple brownish color all over the plant. Am i using too much spray n grow micronutrients? Thanks for helping.

What's the pH of the water your feeding them?

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[LiterallyLiterary]

5.7 - 6 always with the ph lol seems like thats the number 1 reason for sick plants

 

[LiterallyLiterary]

Ppms and ec i keep low. Not more than 600 or 1

I think its either a micronutrients overdose, because ive been spraying them a shitload, or a ph problem. I hope its not ph because that would be harder to fix

 

[LiterallyLiterary]

The new growth is looking like shit. Its all twisted up and dry looking. Thats why im really worried

 

[LiterallyLiterary]

Or im thinking rootbound. But i dont understand why thats even a problem

 

[Waira]

something is way off, either the nutes, or the roots, maybe both! Have you looked at the roots? What are the NPK#'s on that stuff, and your dosage? What are you spraying them with? Symptoms look like P defc., maybe Ca or something else compounding the problems,... that pH is low but not badly so for hempy/hydro'....

 

[LiterallyLiterary]

Im using masterblend 4-18-38 with calnit 5-0-0 i believe and epsom salt. You got me a little worried lol but the leaves look pretty green the other plants arent so bad either of the same strain. Dosage is 400 -600 ppm. I think the roots are bound. Ill look at them tommorow. I spray them with a low ppm of the reg nutes and spray n grow micronutrients with coco wet. Your right though. This plant is real bad. Thanks btw!

 

[LiterallyLiterary]

Dosage ratio is calnit 1 masterblend 1 epsom .5

I just had a thought. In addition to being rootbound, its possible some roots died about 3 weeks ago because the plants had little light for about a week while i was between lights. So they may be poisoning the new growth.