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Thread: PH testing

  1. #1

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    Default PH testing

    Hello all,

    In my previous grows I never PH tested anything, I just did it all by checking condition of plants etc.

    This time around I have invested in a PH pen (haven't got EC reader yet), tested my water after calibration and it's sat around 7.0.

    I'm presuming after adding the nutrients this lowers the PH level, not raises it? What if the PH is still not lower enough - what is best solution to lower the PH further?

    Do I need an EC pen? Is it much harder to without one? Can you grow successfully without one?

    Thanks for your help guys

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  3. #2

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    Ph down to lower the ph. And you can grow successfully without an EC pen. But its easier with one.

    Are you growing in coco then?

    Sent from my SM-G930F using Tapatalk

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  5. #3

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    Quote Originally Posted by RASTA View Post
    Ph down to lower the ph. And you can grow successfully without an EC pen. But its easier with one.

    Are you growing in coco then?

    Sent from my SM-G930F using Tapatalk
    Yes bud, just PH down, right - I read before people prefer to use Silicon for PH Up (so didn't know if there was another preferred product for bringing down PH Levels)


    Yeh I'm kind gathering that, most tutorials you look at they all use EC meters, so may have to invest £80 on the truncheon.

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    My nutes raise my PH, so I use canna organic ph down, it half strength of normal ph down so easier to make smaller adjustments. Normal PH down is 81% phosphoric acid, canna organic is 41% Citric acid.

    If you get the stronger stuff you can add it to a drop of water before adding to your nutes to dilute it down, this makes smaller adjustments easier

    As a cheaper alternative, pure lemon juice can be used to lower PH, its just citric acid

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    Quote Originally Posted by Maccajuana View Post
    My nutes raise my PH, so I use canna organic ph down, it half strength of normal ph down so easier to make smaller adjustments. Normal PH down is 81% phosphoric acid, canna organic is 41% Citric acid.

    If you get the stronger stuff you can add it to a drop of water before adding to your nutes to dilute it down, this makes smaller adjustments easier

    As a cheaper alternative, pure lemon juice can be used to lower PH, its just citric acid
    Ahh right.. So nutes raise the PH not lower it.

    Wow I'm gonna need quite a bit of PH down then if my base water rate is 7.0 PH.

    Cheers dude

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    Quote Originally Posted by roooot View Post
    Ahh right.. So nutes raise the PH not lower it.

    Wow I'm gonna need quite a bit of PH down then if my base water rate is 7.0 PH.

    Cheers dude
    Less than you think, its really strong stuff, remember you can always add more but cant take it out Takes me around 0.2ml/L to drop from 7.0 to 5.6/5.7 with the weaker stuff, would obviously be less with the stronger phosphoric acid.

    A measuring syringe makes it easier when working with such small volumes.

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    Quote Originally Posted by Maccajuana View Post
    Less than you think, its really strong stuff, remember you can always add more but cant take it out Takes me around 0.2ml/L to drop from 7.0 to 5.6/5.7 with the weaker stuff, would obviously be less with the stronger phosphoric acid.

    A measuring syringe makes it easier when working with such small volumes.
    Thanks mate, that's great - and is that using Canna organic PH down?

    Cheers

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    Yep I actually need to order some more, better do it now before I forget xD

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    I use growers ark and have used Dutch pro ferro and vitalink and all iv used has lowered pH usually B lowers it for me I think lol. I also use vitalink pH down don't think it matter to much on witch one
    Just to add I use hardwater nutes

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    Last edited by Grower88; 13-03-20 at 08:42 AM.

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  19. #10

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    Quote Originally Posted by Maccajuana View Post
    Yep I actually need to order some more, better do it now before I forget xD
    Thanks just ordered mine

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