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pH... aerated or no?

Discussion in 'Growing Marijuana Indoors' started by Titleist, May 10, 2021.

  1. #1 Titleist, May 10, 2021
    So getting into my first grow, still have seedlings at this stage but had a question about the consensus on adjusting pH for your water. I'm in soil, so I'd like to keep water/soil pH at or around the 6.5-6.8. mark. I have well water that usually comes out of the faucet around the 6.7 mark which would normally be great if I don't throw any additives in it. BUT, and I know this from having a reef tank I deal with, the pH of the water coming out of the tap at 6.7 is only at that measurement because there's a TON of dissolved CO2 in well water, at least around here anyway.

    So the question, does anyone else aerate their water to remove the CO2, then measure resultant pH and make adjustments from there and water or so you just measure out of the tap and water?

    In a reef tank everything gets aerated and adjusted back where it needs. I have zero idea what happens to the pH of the water or soil after you water with a lot of CO2 in it. If I aerate the water I can get it up near 8. I don't know if at that point it absorbs more CO2 from the air and the pH drops or if it stays steady after aeration. I do have a soil pH meter, a Kelway, that I can measure the soil with. I just didn't want to hit the plants with 6.7 water that then may result in a higher pH left in the soil due to losing the CO2.

    Also the CO2 can't be good for the plants I'd think as they need O2 down by the roots.

    So if anyone has the "best" answer I'd love to hear it. Barring that I think I'd have to just go through aeration and watering to ensure no drastic changes occur in soil pH.
     
  2. #2 SinsemillaPassion, May 10, 2021
    Be sure to PH
     
  3. #3 Titleist, May 10, 2021
    pH when though? Before aerating the water or does it not matter?
     
  4. #4 SinsemillaPassion, May 10, 2021

    PH last
     
  5. #5 Titleist, May 10, 2021
    I get that you pH after all additives are put into the water and make adjustments then. That doesn't take into account whether you're aerating the water though. Aeration drives pH up, it's just whether or not it makes a difference in the root zone if the CO2 leaves the water upon watering or after being watered.
     
  6. #6 GroBuddy, May 10, 2021
    the last thing you do before you pour your water or feed into the pot is adjust ph. regardless of anything else, doesn't matter what you put in or do the last thing you do is adjust ph.
     
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  7. #7 Titleist, May 10, 2021
    And don't worry about aerating the water to remove any excess CO2? I can adjust it either way, one way is mixing water and nutes then check pH, or I can aerate the water first, add nutes and take a reading then. The value will change depending on whether or not I aerate.

    Anyone else using well water?
     
  8. #8 GroBuddy, May 10, 2021
    yea i personally wouldnt use it bacteria and stuff grow around the pump and at the top of the water. reason for having to use a filter or suppose to in order to consume well water. i dont now but i had well water most of my life. best water to use is r/o, spring or rain water
     
  9. #9 SinsemillaPassion, May 10, 2021
    Who bothers aerating water
     
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  10. #10 Bongsauce, May 11, 2021
    No ones aerating water around here to dissolve co2 out of it bro. At most people let tapwater sit out 24hrs to let the chlorine evap. I've been around multiple forums for over 10 years and I've never heard it mentioned once. That would lead me to believe that it isn't important at all.

    Just properly ph your water and make sure you don't have a high ppm/tds and there isn't a ton of heavy metals or something in it.
     
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  11. #11 Tankado78, May 11, 2021
    True. I definitely do the 24hr. sit out b4 I use the water. Or, since you're use to the reef system or tank, you can always use tap water conditioner that you would for the tank to take the chlorine out the water for immediate use.

    Sent from my SM-G960U using Tapatalk
     
  12. #12 GroBuddy, May 11, 2021

    chlorine isnt in well water thats where his tap comes from. chlorine is only used in city water
     
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