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Thread: using vinegar to lower pH?

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    Default using vinegar to lower pH?

    hey,
    will adding a little bit of vinegar to water to get the right pH be ok for the plant?
    my guess is that there shouldn't be any problem, as i dont think there's anything in vinegar that could be bad for a plant, but correct me if i'm wrong.

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    you got a way of measuring pH value of the water?

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    yea, of course
    i know the water here is around 7.5-8,
    I want to get them down to around 6.5 using vinegar, think its ok?

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    Just googled a bit and alot of people say they have killed quite a few young plants trying to use vinegar instead of PH down...I'd err on the safe side and buy some PH down, after all if vinegar was every bit as fine to use then almost everyone would probably use it instead of buying PH down.

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    Isn't vineger an alkaline? You want an acid to lower PH, try lemon juice.
    .
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    it works but not very stable, use it till you get something better

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    Quote Originally Posted by ViK View Post
    Isn't vineger an alkaline? You want an acid to lower PH, try lemon juice.
    No it's an acid, a solution of 4-6% acetic acid.

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    Quote Originally Posted by ArxFatalis View Post
    No it's an acid, a solution of 4-6% acetic acid.
    I'm interested in this and lemon juice for lowering PH , got some chip shop vinegar that contain's acetic acid , but i know as i have mixed this into vinegar in the past that it's really weak , like a drop in a litre . Wondering about getting it wholesale or similar ?
    Done a little experementing with cider vinegar but never used it on a grow , PH went down but never stayed stable for long , rising again .
    Considering i'm soil i wondering can i use vinegar as it'll last as long as like i water every couple of day's kinda thing .
    http://en.wikipedia.org/wiki/Acetic_acid
    http://www.apple-cider-vinegar-benef...negar.html#phv

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    Quote Originally Posted by kofgorila View Post
    hey,
    will adding a little bit of vinegar to water to get the right pH be ok for the plant?
    my guess is that there shouldn't be any problem, as i dont think there's anything in vinegar that could be bad for a plant, but correct me if i'm wrong.
    Unless your water is virtually caustic your compost should quite happily buffer it down. pH down of any description can adversely affect the microflora and ruin the compost as it is much harder for the compost to buffer up than to buffer down.

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    man use lemon juice.... get those 20p jiffys from sainsbury and squirt away!! i have heard that vinegar works too but havent tried it myself.... i sure it wud but if ur growin organic i wudnt even bother with ph......... what i do to lower the ph sometimes is charcoal filtering... i can get my ph8 water down to 6.5 one strain....
    .. a tipple made it topple and
    a nipple put a stop to all.

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