Nute burn? Or deficiancies?

[Ganggreen]

Hello I am a first time grower and would appreciate any advice i can get for my girls. Here is the grow info. They have some tip burn but also they have tiny yellow edged brown spots concentrated at the leaf tip and then spreading out as they get further down the leaf sort of uniform. I cant tell if its a deficiency due to lockout or just nute burn. I suspect multiple problems. I know its not spider mites.

3x3x6.5 grow tent (non toxic) milliard
600w air cooled tube + hood
6 inch inline fan/carbon filter (filter>fan>cooltube>exhaust)
DWC (4) 5 gallon buckets with no shared rez
ak-49 autoflower vision seeds
advanced nutrients grand-master line + connoisseur
R/O water
week 4 of flower
20/4 cycle , light is about 12 inches from canopy but temps are cool
tent is 82 degrees
water is 68 degrees


about 10 days ago i found some nitrogen toxicity in a couple of them ans i changed all their buckets and just put b-52 and ro water for 48 hours and then went to half nuts and cleared that problem (new growth is fine) but the brown spots still remain and are intensifying on the older leaves and will certainly show on the new leaves in a week.

so lockout? or burn? i have no clue.

like i said im a noob so sorry if i left out any info and thanks for any help you can throw my way

 

[Miraculous Meds]

Pics are ur biggest help here. ]

But it sounds as u have diagnosed correctly.

"I cant tell if its a deficiency due to lockout or just nute burn. I suspect multiple problems. "

That statement all means the same thing.

Damage will never get healthy, new growth will, so if that what u have going on then ur on the right path, keep ur nutrients at half of what they were when they caused the burn. Don't worry about small damages, if the leaf is over 50% damaged then u can take it off.

what nutrient strength, and brand o nutrient are u using, and at what ph.

 

[Dick Turpin]

I agree, without pics it will be difficult to tell.

 

[Ganggreen]

thank you for the reply =)

im using connoisseur +AN grandmaster line i started at 1/4 then i worked up to full strength but that was too much so i backed down to half but its still seems to be too much... and on the other hand the micro nutes are in there so do i need to get separate micro nutes to compensate?

the ph is a guessing game i have the drop test and im never sure if im looking at the right shade of yellow but i think im between 5.5 ish to 6.5 ish

the stuff is supposed to be ph perfect but that's bs

 

[Ganggreen]

as far as pics ill try and get some up but it will be a couple days at least till i get my phone back.

 

[Miraculous Meds]

Hey bud, if u don't have a ec meter then id use half strength like ur doing, and if u feel the new growth is still effected, then keep dropping the strength down till shes happy.

 

[Ganggreen]

https://www.icmag.com/ic/album.php?albumid=57153&pictureid=1335062

https://www.icmag.com/ic/album.php?albumid=57153&pictureid=1335064

https://www.icmag.com/ic/album.php?albumid=57153&pictureid=1335065

 

[Ganggreen]

so i burn em to bits then starve them of cal/mag maybe?

 

[Ph-patrol]

It looks like a calcium deficiency to me. Go here http://www.growweedeasy.com/marijuana-symptoms

 

[Ganggreen]

so from the pics is it fatal? or if i get some calmag tomorrow it should be ok right?

 

[Miraculous Meds]

so from the pics is it fatal? or if i get some calmag tomorrow it should be ok right?

No its not fatal.

The pics show, calcium, magnesium, potassium probably and nute burn.

So I wouldn't put cal mag in there cause u have plenty in ur nutrients already. U have added to much nutrients or did something else to cause nutrient lockout.

Use ur half strength base nutrients only at 5.5 to 5.8 ph. That is ur answer. If u add the other shit u will be compounding the problem by increasing nutrient strength and locking nutrients out again. Its the most common mistake there is. People see deficiency and think they need more when they have plenty but used to much and that stops the nutrients from being available and voila, u have deficiencies.

 

[Ganggreen]

No its not fatal.

The pics show, calcium, magnesium, potassium probably and nute burn.

So I wouldn't put cal mag in there cause u have plenty in ur nutrients already. U have added to much nutrients or did something else to cause nutrient lockout.

Use ur half strength base nutrients only at 5.5 to 5.8 ph. That is ur answer. If u add the other shit u will be compounding the problem by increasing nutrient strength and locking nutrients out again. Its the most common mistake there is. People see deficiency and think they need more when they have plenty but used to much and that stops the nutrients from being available and voila, u have deficiencies.

did you mean the pics show cal, mag and pot, deficiencies and also nute burn? and this is due to a lockout either by too much nutes or ph issue?

that makes sense... so make sure my ph is good and use only base nutes at half strength. ok thx ill try it

 

[Miraculous Meds]

did you mean the pics show cal, mag and pot, deficiencies and also nute burn? and this is due to a lockout either by too much nutes or ph issue?

that makes sense... so make sure my ph is good and use only base nutes at half strength. ok thx ill try it

Bingo that's exactly what I meant. Sometimes im horrible at wording it correctly.

 

[Ganggreen]

ok so i think i have found the culprit

my ppms are 800 range and have been since the trouble started so i dont think its over fert that is causing the lockout.

i think its because its be cause ive been playing the ol' back n forts with the ph up+down because the AN products are not PH perfect as they claim. I think its because i use too much ph solution.

any thoughts?

 

[br26]

drift of pH is optimal

let acid or base dilute well before the solution hits the roots again

 

[Miraculous Meds]

ok so i think i have found the culprit

my ppms are 800 range and have been since the trouble started so i dont think its over fert that is causing the lockout.

i think its because its be cause ive been playing the ol' back n forts with the ph up+down because the AN products are not PH perfect as they claim. I think its because i use too much ph solution.

any thoughts?

Yes that's possible because ur changing the ratio of elements when u add up and down. But how much have u given it. How much has it raised the ec/ppm after u have added it to the water. U could always change out the water and start fresh, get ur base ec readings, then add the ph stabilizer needed to attain ur ph, and measure ec again to see how much it takes to adjust ph. It its more than 5% of ur solution its probably too much and u need to check or starting waters ph, might be causing some problems.

Its better if u don't have to use the ph up and down hardly at all. Say in a healthy environment if u add ur nutes and ur ph starts at 5.2 to 5.5 and works its way slowly up to 6.0 ish , then that would be ideal.

What scale is ur ppm 700 or 500, if its 500 then ur 800 reading means 1.6, and can possibly be too hot. 1.0 to 1.2 base ec is all that is needed for optimum growth.

 

[EclipseFour20]

Picture is worth a 1000 words--