Over watering? Nutrient lock out? Pics included.

Can anyone help me pin this down? What's going on here? They were in solo cups a week ago getting 750 ppm of GH, green and healthy, went into 3 gallon pots and now look like this. The strain has been run before, GH nutes 1000 ppms. 70/30 coco perlite only mix. Thank you all for any help or advice.

The leaves are curling downward like a closing fist, the leaves look purple on the bottom and yellow on top

MidnightTrain said:

Can anyone help me pin this down? What's going on here? They were in solo cups a week ago getting 750 ppm of GH, green and healthy, went into 3 gallon pots and now look like this. The strain has been run before, GH nutes 1000 ppms. 70/30 coco perlite only mix. Thank you all for any help or advice.

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Something off w/ the nutes or roots imo, your stem/stalk color is off bad.

How often/much do you water?

Can you post pics on normal light? And any pics of what they looked like a week ago?

weedstoner420 said:

How often/much do you water?

Can you post pics on normal light? And any pics of what they looked like a week ago?

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I believe these have only been watered once in the last 5 days. There's a pic in normal light. No pics from before but there's a ton of clones where they came from that all look fine still.

1000ppm seems a bit high. are you watering daily to run-off?

MidnightTrain said:

I believe these have only been watered once in the last 5 days. There's a pic in normal light. No pics from before but there's a ton of clones where they came from that all look fine still.

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You need to water coco daily, multiple times once the plants get larger. Your medium is probably drying out and causing salt build up.

rkymtnman said:

1000ppm seems a bit high. are you watering daily to run-off?

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I'm not in charge of this room so I'm not 100%

Nope_49595933949 said:

You need to water coco daily, multiple times once the plants get larger. Your medium is probably drying out and causing salt build up.

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These have only been in these pots for 5 days tho. They aren't drying up daily yet.

MidnightTrain said:

I'm not in charge of this room so I'm not 100%

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have them measure runoff ppms. i bet it's crazy high. either that or the pH is/was way off too.

rkymtnman said:

have them measure runoff ppms. i bet it's crazy high. either that or the pH is/was way off too.

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Ph is 5.8

im not a coco guy. but from what i understand you do need to water more. as for the feed it does seem a hair high to me. I would as others suggested, check run off and get an idea of whats going on in the root zone.

rkymtnman said:

have them measure runoff ppms. i bet it's crazy high. either that or the pH is/was way off too.

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The run off caught in the waste resivoir is reading 1500ppms

MidnightTrain said:

The run off caught in the waste resivoir is reading 1500ppms

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they need to start feeding at least 1x a day to runoff with a feed of about 200 ppms for a few days and see what the new growth looks like. and turn down the lights too.

Yeah, those purple stems say it's a clear case of over-fertilization. I would cut your fertilizer in half for now or around 600ppm, then ease up to about 800ppm. Run-off at 1500 is wild. I also don't recommend watering until the coco has started to dry a tiny bit (about top 1/4 inch). Over-watering and over-fertilization go hand in hand. I love a good moisture meter, but the cheap ones are garbage. Then when you water, make sure you have about 5-10% of your container volume runoff each time and test it. If the runoff ppm is ever higher than the input, you have a build-up issue. Runoff should always test lower.

cougheeesm said:

Yeah, those purple stems say it's a clear case of over-fertilization. I would cut your fertilizer in half for now or around 600ppm, then ease up to about 800ppm. Run-off at 1500 is wild. I also don't recommend watering until the coco has started to dry a tiny bit (about top 1/4 inch). Over-watering and over-fertilization go hand in hand. I love a good moisture meter, but the cheap ones are garbage. Then when you water, make sure you have about 5-10% of your container volume runoff each time and test it. If the runoff ppm is ever higher than the input, you have a build-up issue. Runoff should always test lower.

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This is wrong. If anything it is a nutrient DEFICIENCY. Phosphorous. Look it up.

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Modern Selections said:

This is wrong. If anything it is a nutrient DEFICIENCY. Phosphorous. Look it up.

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Could be either one really. Lockout and deficiencies can appear similar but have very different causes.

If OP is feeding 1000 ppm of a balanced, tried and true nutrient line (GH), and runoff ppm is 1.5x what is going in, then I'd lean more towards a lockout.

Regardless of what he says, and that is because he said he is not in charge of the grow, the plant is suffering from a pH issue and is starving.

How the hell are we gona help you if you're not in charge of the grow?? Who is?? Can THEY post on here? You're probably leaving out details that allow us to help you.

IMO your pH is off, and your rootzone PPM is probably super high and locking out out what looks to be potassium due to lack of runoff. General Hydroponics and coco-grown plants go together like peanut butter and jelly& is one of the easiest ways to grow, you shouldn't have problems like this.

Lockout. Feed it a microbial tea to break down those buildups. No nutes until runoff under 650 or so judging by plant size. 5 days in coco is a bit long should be ready for water like day 4 after fresh transplant, 5th day being dry; def leaning to root zone issues. A good tea should get u back up and running. I’m no Dr.B but just my opinion.