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DIY: pH Down - EASY!

Discussion in 'Do It Yourself' started by Enigma, Jan 13, 2010.

  1.  
    Tink3rFarms

    Tink3rFarms Active Member

    I think if i ever have to ph down i might try this
     
  2.  
    Kaya88

    Kaya88 New Member

    This is info that will save you a ton of money "when in doubt". my DIY PH kit: 1000% natural.

    Red cabbage has a chemical called anthocyanin in it, which makes this a offical liquid ph indicator:

    1. use ro water distiller water, and mix with your nutes.

    2. bring your mix to a boil in a pot.

    3. chop up enough red cabbage to fill half a cup.

    4. after the boil is done, pour a little of your boiled water mix over the cabbage.

    5. get a coffee filter and 5 glasses, strain the cabbage water through the filter, and you now have a indicating liquid. pour the cabbage water into the five glasses.

    6. the water will change color, if the water is in the red spectrum (red, orange or yellow) then it is considered (acidic), and if it is in the green spectrum (green, purple blue) it is considered (alkaline).

    PH UP:
    use baking soda to make the media or water alkaline (i use my finger tip, flick off a little of the soda, and dip till i reach my desired ph) or i use un-PH'd distilled water to rise the ph. dont use very much of this stuff, use caution with the baking soda.

    PH DOWN:

    lemons, limes, oranges, vinegar, soda pop (yes i said soda pop) use a dropper with these, too much will make a red ph of 4.0 so be careful.

    total expense: 5.00$

    thats it :bigjoint:
     
    Last edited: Oct 27, 2015
  3.  
    hotrodharley

    hotrodharley Well-Known Member

    Baking soda is not a good pH balancer for our needs in most cases. It is another salt and high sodium.
     
    Enigma likes this.
  4.  
    Kaya88

    Kaya88 New Member

    which is why i clearly said ( dont use much ).
     
  5.  
    since1991

    since1991 Well-Known Member

    Not ideal for coco coir and way way overpriced but i will stick with gh ph down. I dont use much. A capful or 2 in a 25 gallon tank drops my ph about 6.0. But man i know how they make it and it truly is like 10,000% profit margin.
     
  6.  
    Enigma

    Enigma Well-Known Member

    Thanks for all of the likes! I hope this helps the community grow better bud!
     
  7.  
    applepoop1984

    applepoop1984 Well-Known Member

    the "chemistry engineer" had 7 posts on the forum before commenting.
    he called himself a "chemistry engineer" which made me doubt that he was a chemical engineer. do you understand now? as far as sulfuric acid is concerned, workers exposed to just the mists of it have a 64% chance of getting lung cancer.now even diluted, and with marijuanas ability to absorb the heaviest metals in nature at a rate that is unheard of, i would be very concerned with using that as ph down.

    the alternative that is much safer and has no known links to cancer would be:

    food grade phosphoric acid(best)
    https://www.amazon.com/Gallon-Grade...id=1496911965&sr=8-9&keywords=acid+food+grade

    water ionizer with adjustable ph control

    notice how phosphoric acid is not a carcinogen, also of note we had a brewer comment on using sulfuric acid. it is true that large scale breweries use it but this is apples and oranges, seeing as drinking a carcinogenic substance is much less hazardous than smoking it.

    sorry to dig up an old thread but this info is dangerous both short term and long term, only food grade acids should be used when growing smoke-able things, and at 48 $ a gallon ... phosphoric acid is superior in price ( food grade sulfuric is more expensive), safety, and flavor
     
    Last edited: Jun 8, 2017
  8.  
    churchhaze

    churchhaze Well-Known Member

    Plants don't absorb sulfuric acid, they absorb sulfates and use them to make proteins... This mental image you have of smoking acid is just wrong.
     
    Enigma likes this.
  9.  
    applepoop1984

    applepoop1984 Well-Known Member

    but humans mixing 97% sulfuric acid with water absorb it through their lungs. while not a strong acid, phosphoric food grade 85% is just as good and is not carcinogenic. priced the same as well. no reason to use sulfuric over phosphoric, general hydroponics uses 10-30% in their ph down formula
     
  10.  
    churchhaze

    churchhaze Well-Known Member

    You're the one saying it's more dangerous to smoke than drink. Read what you wrote. You don't smoke sulfuric acid..
     
    Enigma likes this.
  11.  
    applepoop1984

    applepoop1984 Well-Known Member

    you do however inhale it.
     
  12.  
    Enigma

    Enigma Well-Known Member

    Do not spread misinformation in my threads.
     
    churchhaze likes this.
  13.  
    applepoop1984

    applepoop1984 Well-Known Member

    Other than not being a strong acid, What do you think are the disadvantages of using phosphoric acid for pH Down rather than sulfuric acid.

    I erred in stating that sulfuric is dangerous to smoke. However mixing it with water you are exposed to the fumes of 97% sulfuric acid. It is proven to be a known carcinogen with 64% of workers that have inhaled it have lung cancer. I'm not looking to cause trouble but you cannot deny that food grade phosphoric acid is safer just as inexpensive and works just as well as sulfuric. There is no misinformation these are clearly facts

    Not only that, its actually cheaper than battery acid:
    http://www.mbferts.com/Phosphoric-Acid-85-Food-Grade-Fertilizer-Hydro-DIY-pH-Down-260.htm

    At 99$ for 5 gallons, by far the cheapest safest pH down available.

    The cost per gallon comes out to $4.95 compared to General Hydroponics 25 - $30 this is by far the best safest and most economical way of pHing
     
    Last edited: Jun 8, 2017
  14.  
    Enigma

    Enigma Well-Known Member

    An excerpt from an article written by The Center for Agriculture, Food and the Environment:

    "In our experience, the most effective and widely used acid is sulfuric acid; however, this is one of the most hazardous acids to use. For low amounts of alkalinity removal, phosphoric acid may be the acid of choice. However, we do not advocate adding more than 2.25 fluid ounces of this acid to 100 gallons of water, because of the amount of P one would add. Nitric acid is theoretically ideal because it adds nitrate nitrogen; but it fumes and is highly oxidizing, making it very difficult to handle. Citric acid is a weak organic acid and a solid, making it safer than the other three; but it is much less effective, and therefore more expensive to use."


    Simply, copied and pasted with no adulteration for your information and education.

    I want anyone who is willing to listen and learn to grow the best possible bud without being taken advantage of by gimmicks and marketing.
     
    Last edited: Jun 9, 2017
    churchhaze likes this.
  15.  
    applepoop1984

    applepoop1984 Well-Known Member

    Completely ignored my question, are you a sulfuric acid lobbyist
     
  16.  
    Enigma

    Enigma Well-Known Member


    I'm not concerned with your inquiry. Facts are facts, if you did your research you wouldn't be asking me a thing, you'd +rep and move on, instead you are bad mouthing my thread with gimmicks and marketing while making a competing thread aimed at discrediting this thread which is aimed to help people save money while growing the best bud possible.
     
    churchhaze likes this.
  17.  
    applepoop1984

    applepoop1984 Well-Known Member

    The goal of my thread was the safest PH down that is effective and inexpensive. $4.95 for a gallon of pH Down it is a steal and the fact that it's not carcinogenic like sulfuric acid is is an added bonus. Cant argue the facts
     
  18.  
    Enigma

    Enigma Well-Known Member

    Stop posting in my thread.

    Sulfuric acid is the most commonly used pH down in professional agriculture.

    You may have been tricked by your local hydro shop, the rest of us are here to learn and grow.
     
    churchhaze likes this.
  19.  
    Enigma

    Enigma Well-Known Member

    The five (5) gallon bucket of pH down that you posted is $100. Who is going spend $100 on pH down unless they are growing in a warehouse? Still, at that level it is highly encouraged NOT to use phosphoric acid on such a large scale, sulphuric acid is safer. Besides, $8 for a bottle of sulfuric acid that I never used all of was the wisest investment.

    Edit: this is an excerpt from your thread. The first paragraph, or at least what resembles one, roughly.

    "many posts on here about cheap diy ph down from sulfuric acid... there is a better safer carcinogen free alternative that is superior; phosphoric acid"

    If that isn't directly aimed at discrediting my thread that is based on facts, instead of your marketing gimmicks, then I don't know what is.

    -E
     
    Last edited: Jun 9, 2017
    churchhaze likes this.
  20.  
    applepoop1984

    applepoop1984 Well-Known Member

    For some reason you think I invented phosphoric acid which is not the case. I have no affiliation with the links I posted and I feel it's in the best interest that Growers have many options including phosphoric acid which is much safer than sulfuric acid. Not only is it food-grade unlike your battery acid but it's non-carcinogenic also unlike your battery acid. I don't see any reason to stop posting adding a constructive alternative that is much safer is not something that is frowned upon on this forum
     

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