Need a diagnosis (yellowing leaves)

Led grow, initially had lights very close now they’ve been raised a couple feet until she gets better…also went half strength with nutes…thoughts please20171104_02162620171104_021645hoping just case of light being to close.

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it being in early flower i would think she would be hungry…not sure if backing off nutes would be good.
heat from lights will mess some stuff up…lol
myself i would try lights and watch closely… you prob need all the nutrients or 2/3.
jmo, hopefully others will share theirs also @BigBudMan

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Thanks a bunch

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you are welcome!

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@BigBudMan

I agree with @BIGE

Why don’t you fill this out so we can have a better understanding of all the factors. it could be a combination of things.

COPY/PASTE: This “Support Ticket” into your forum post.
Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so = NA

Strain; Type, Bag seed, ILGM… name of strain:

How many plants:

Age from Sprout and Flower:

Soil in pots, Hydroponic, or Coco / Brand and type of Soil & Size of Pots:

How often do you water and how do you determine when to do so?

PH of water and runoff or solution in reservoir:

What is strength of nutrient mix? EC, or TDS:

Indoor or Outdoor:

Light system, size and height from plants:

Temps; Day, Night:

Humidity; Day, Night:

Ventilation system; Yes, No, Size:

AC, Humidifier, De-humidifier:

Co2; Yes, No:

Add anything else you feel would help us give you a most informed answer. Feel free to elaborate, but short, to the point questions and facts will help us help you

Also here is a Deficiencies & Excesses Chart to help you identify what is wrong with your plants

deficiencies

Nutrient_Chart2

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Answer these simple questions the best you can.

If you do not know, or do not use something; Just say so = NA

Strain; Type, Bag seed, ILGM… name of strain:xxx og

How many plants:4

Age from Sprout and Flower:clones ending 5th wk flwr

Soil in pots, Hydroponic, or Coco / Brand and type of Soil & Size of Pots: Coco

How often do you water and how do you determine when to do so? when pots are light

PH of water and runoff or solution in reservoir: 6ish going in 5ish out

What is strength of nutrient mix? EC, or TDS:
GH 3part 2/3 strength
Indoor or Outdoor: indoor

Light system, size and height from plants: diy 800+watts led was 5" frm canopy raised to 20"
Temps; Day, Night: 70’s

Humidity; Day, Night:n/a

Ventilation system; Yes, No, Size:yes fresh intake air from window at night circulating fan open door

AC, Humidifier, De-humidifier:n/a

Co2; Yes, No:n/a

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Coco requires more frequent watering and nutrients more often, unless the coco is amended with anything?

I’d recommend full strength nutrients

They’re your plants but potted MJ needs to have the pH correct for the medium

measuring pH as an ish number could lead to problems. Consider a pH meter. Coco is looking for more like 5.8 pH

Nutrient_Chart2

Are you following the GH feeding schedule?

GH_FloraSeries-DTW_03216am

I think you might still be too close probably should be more like 3 feet

From niala

Here’s a chart for LED lights, it’s for equivalent watt, so if your LED light is 300W follow the chart for it, it’s not made for actual or real draw and it’s an approximation, that clarify, here it is :

600W to 1200W ~3.0 feet

A couple minor tweaks and the girls will be back on track! Best Wishes!

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I agree, it sounds as if your lights may be too close. I’d back off to about 30" or so for a few days and keep an eye on them.

Looks good tho bud, they should bounce back no problem.

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Your in good hands i was just about to repeat what @bob31 & @BIGE both mentioned
So i wont @BigBudMan

Could you give us an overall shot of the plant in natural light?

5th week of flower in coco could be a cal mag issue too. Lockout due to ph plus P K deficiency? @bob31 @Countryboyjvd1971

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I’m using tap water didn’t think I needed calmag

If your in soil this is your problem, nutrient lockout, possibly calcium and magnesium, you need to start watering with a higher PH until your run off is to about a 6.3

Your in coco, nevermind

Still looks like nute lockout, just my take

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Medium: coco/perlite

I would think 5 would still be a little low, but 5ish??? Depends on what the ish is comprised of.

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I’m familiar with coco but not experienced. I know it’s suppose to follow pretty much a hydroponic PH schedule to which I am familiar with and If this is the case your run off should be at bare minimum 5.5-5.6.
Might get a coco grower to confirm

I have a ph meter need to calibrate…no solution so i’ve been doing it the old fashion way

Thanx to everyone who chimed in…awesome site

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Hydroponics is a little more like a chemistry set than growing in soil. I feel like I have to be much more exact with my readings when growing hydroponically, I would suggest buying a new PH meter or getting some more solution, it’s really cheap and all you really need is 4 and 7

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@TDubWilly, coco is the bomb! I’ll never do soil again! But it has its own idiosyncrasies to deal with.

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You know @Myfriendis410, I have a container of coco in my grow room, back in the corner and I have never used it.

I originally bought it at the end of spring, thinking that, because I already knew how to grow in soil, I could step right in and wouldn’t miss a beat…

Then I saw a YouTube video…

I have actually gone back several times to try and find this video and can’t, but it’s a DWC grow, side by side to a coco grow. The grower claimed that all of his feeding regimes were the same on both. There wasn’t a small difference in size but a massive one between the two growing methods. The DWC blew it away.

It was basically that video that made me shy away from coco. But to be fair, I’ve never given coco an opportunity myself. I’m sure coco would take care of me well if I gave it a chance :+1:

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