Calcium deficiency?

[Brizzle8218]

I know this is a common problem, the reason for my post is because it's on an aeroponics setup so just one out of my 3 plants has it but obviously all getting the same ph and ppm. I'm sure everything will be fine but would love to hear some thoughts on it. Nerds strain, 3 weeks, ppm 600, 5.9ph (was thinking of going to 6.2 for calcium reasons but not sure since the other 2 are fine), 600 watt mh hortilux, 72 degree room, 72 degree water, 40% humidity.

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[PagodaVapors]

I know this is a common problem, the reason for my post is because it's on an aeroponics setup so just one out of my 3 plants has it but obviously all getting the same ph and ppm. I'm sure everything will be fine but would love to hear some thoughts on it. Nerds strain, 3 weeks, ppm 600, 5.9ph (was thinking of going to 6.2 for calcium reasons but not sure since the other 2 are fine), 600 watt mh hortilux, 72 degree room, 72 degree water, 40% humidity.

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Dude 600 ppms is way too much for a plant that age. She's in the seedling stage bro lol

What nutes are you using ? And how much of each did you add?

Nice little room you have there by the way, it has potential !


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[The Germinator]

Was going to say the same. Ppm is way too high. I think my ppm was about 100 to 150 at that age.

 

[Brizzle8218]

Was going by the box, I guess that was my first mistake. Am I missing something or is this just a crap brand? Lol


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[PagodaVapors]

Was going by the box, I guess that was my first mistake. Am I missing something or is this just a crap brand? Lol


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Nah GH is pretty good. You just have to know how to use nutrients. I would cut that in half and use 1/2 strength. Maybe even 1/4 strength depending on how strong 1/2 strength is


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[Brizzle8218]

So now this is happening. Any ideas? I just changed all the water and am letting it stay at just 150ppm, 5.9 ph and 72 degree water temp. Somehow my ppm had gone up on its own from 500 to 850. Figured I would let them have new fresh water for a bit. Does this look like nute burn or a deficiency?


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[Obi Wan]

The old growth looks damaged from a nutrient lockout/deficiency and will most likely die off in short order.

The new growth looks to have some nutrient burn.

Good idea to flush the reservoir. Watch the new growth to see if you have corrected the issue. When ready, reintroduce nutrients at about 25% strength and increase strength until you see signs of toxicity, stress or nute burn and then back off to your known safe strength.

The directions for the nutrients are very general. Depending on the cannabis strain the plant may require more or less than directed. It is advised to always start low.