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guys I need help I am a first time grower and I don't know what causes this. if its a fungus want to get it out. its a og kush auto I feed

guys I need help I am a first time grower and I don't know what causes this. if its a fungus want to get it out. its a og kush auto I feed with r/o water.amd am growing in coco Loco. good light led.. controlled temps. 75 to 82 and 45 to 60 rh. just water and calmag cause coco Loco is amended

4 answers4 replies

Comments (8)

mwhite9829

Nov 17, 2020

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6.5 is high for Coco in my opinion, I usually center at 5.8. And how often do you water/feed? What would help is a little more info, run off pH/ppm, nutrients and frequency, veg or flower. Over watering, wrong ph, potassium deficiency kind of share , need more info to better determine.

millermanagement2006

Nov 17, 2020

Replying to

I water when it feel light i have a pot with just dry dirt so I compare them and when when dry also use a moisture meter 2 prog that goes in dirt I really am careful about over water. ppm is high 125×10. on my tester. I think its cause the coco is already amended. I only water and calmag. cause ppm run off is so high. they are 20 in from light. OG kush. auto. 3rd week of flower. I think I am having trouble with the Coco Loco it being amended already confuses everything I'm doing. So I am not feeding any nutrients just water and Cal Mag

mwhite9829

Nov 17, 2020

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Replying to

If my math is correct 1250 ppm isnt high for wk3 of flower. I'm thinking two possibilities, one the pH is to high and locked out nutrients like potassium, 2nd there is build up also causing the same issue(common in Coco). I'd flush and bring the pH down, then on last water of flush feed 1/2 nutrients and then check ph/ppm run off again.

Mr. Grow It

Nov 17, 2020

Replying to

@millermanagement2006 I agree with @mwhite9829 that 6.5 pH feed in is too high in coco. I also feed in at 5.8 pH every time. That could very well be the reason for the problem.

millermanagement2006

Nov 17, 2020

yes I ph water at 6.5 and add calmag since the coco loco has nutrients in it. not over watering and the light is 20in away. the tent is clean and don't see bugs.

Unknown member

Nov 17, 2020

Replying to

try to ph down to 5.8-6.1. I grow in organic peat moss. Similar to coco. Those mediums like lower a lower ph.

chriscovey

Nov 17, 2020

Have you checked for pests?

Heroin Addict

Nov 17, 2020

I'm new too, but I think we need a bit more info - are you pH your RO water? RO is relatively neutral, and I know plants like to soak nutes from low and high ends. Also, I don't run coco, but don't you run lower ph on coco? maybe a ph issue? I know it sucks to see your babies hurting but I'm sure someone has the answer! If not MrGrowIt will most likely respond in 24/48 hours. I wish you well my friend! PS: How often are you watering? So many things can show so many of the same effects, but can be multiple issues. It's better to under than over water. Don't water on set days, learn the weight of your pots and water when they're low/thirsty! Also, how close is your light, I've been told light stress can turn the tips yellow and it can run down the sides of your leaves too. does the top of the canopy have the same issue? this looks like mid level leaves?