Ok need help !! I’m growing a 7 week old EGSC plant in FFOF AND a PH of 6.3. Also using General Hydro nutes on a half of a normal dose per 1 gallon of distilled water, but when I check PPM and PH on Drainage I’m getting 300-360 PPM and a 5.4 Ph. Plant looks real good in budding so whats up ???
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I don’t know how but have read around here others saying RO and distilled water has an effect on ppm. Hope that points you in a good direction
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That runoff ph is just the ph buffers in the soil doing what they do. That ppm is low for flowering plants. What’s the input ppm?
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Just recieved my ppm meter today . After adding nutes and ph up my ppm is 324 !
Wow. They’re being underfed. Unless your meter has a x10 denotation. Then it would be 3200 ppm which is too much. But with you feeding at 50% I don’t see how that’s possible.
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What should his runoff PPM be at this stage?
It is x10
@artless just a general chart for ppm per plant stage.
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Seedlings: 100-250 (nutrients aren’t needed here, hence there’s not a lot of particles needed)
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First Half of Vegging Cycle: 300-400 (this is usually after you transplant, which still doesn’t require many nutrients)
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Second Half of Vegging: 450-700 (you’ll start giving your plants more nutrients at this stage)
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First Half of Flowering: 750-950 (your plants will be eating more as they grow, so they’ll be taking in more nutrients)
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Second Half of Flowering: 1000-1600 (this is when your plant’s eating the most, especially if you give it additives)
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End of Flower, Entering Harvest: As close to 0 as possible (this is when you’ll be flushing your plants, so you don’t want there to be a lot of particles leftover)
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There should be a symbol on the meter if that were the case. It’s about time to start giving the full dose. If they look good now, you can wait to start seeing a deficiency and then start the full dosage
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Wow! thanks. I am new to measuring this. I am assuming these are input ppm goals? Should the runoff be the same?
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At seven weeks seems low fed.
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Sure will
Thanks alot for info
Ideally, yes, the input and runoff ppm should be close. If your runoff is over by a lot, just introduce a water only session between feedings.
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Thanks for simplifing this. I’m planning on following this thru my first coco grow.
Keep in mind, runoff PH is more important in coco. Coco doesn’t have the buffers soil does so if your runoff PH differs a lot from your input, there’s a problem.
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@BobbyDigital
Thanks for info . 
Can you give example please?
How much difference 
My runoff is the same as I’m putting in
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