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Thread: ph and ec in runoff

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    Default ph and ec in runoff

    Hi my ph runoff is 6.8 even tho it goes in at 5.8 and my ec runs off at 2.7 even tho it goes in at just over 1.1, i have tried to flush it with low dosage of nutes but run off on next feed is still the same. I have tried lowering ph to 5.5 but run off still comes out 6.8. Only using canna a+b and little cal mag but not all the time

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    Quote Originally Posted by mickeycc View Post
    Hi my ph runoff is 6.8 even tho it goes in at 5.8 and my ec runs off at 2.7 even tho it goes in at just over 1.1, i have tried to flush it with low dosage of nutes but run off on next feed is still the same. I have tried lowering ph to 5.5 but run off still comes out 6.8
    What stage are your plants at and how do they look, any pics ?

    Regards BL

  3. #3
    Macky Guest

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    First of mate, you need to flush them until your run off ec is lower than your feed. It'll take a while, and a lot of water, but it needs to be done. Then feed at a lower ec, you're over feeding which is why you eventually gotten this salt build up. Flush man, get that shit out of there. Ph the water at 5.8-6.0.


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    Plant is an incredible bulk auto 5 weeks old took with flash on

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    here is what it looked like last week took without flash

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    Last edited by mickeycc; 08-04-18 at 09:29 AM.

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    took it out tent get couple photos without flash
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  7. #6

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    What's your background Ec mate ?

    Regards BL

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    about 0.43

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    Quote Originally Posted by mickeycc View Post
    about 0.43
    I'm assuming this is coco yeah you didn't say ? Your over feeding then mate with that low background...Set your total Ec at 0.8~0.9. Give them just plain pH adjusted water 5.4 for a couple of days then go in with the lower Ec and go back to 5.8 on the pH...Make sure you are watering daily with a decent amount of runoff and don't let the plants sit in the runoff...Keep the cal-mag out of your feed solution, use it as a foliar feed this will help prevent salt build up in the medium...

    Regards BL

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