Need advice:Trying to adjust SOIL PH level

[POHNNY]

Soil Ph level at 7-7.5 tested.I know that's high for soil. Using 3 gallon pots, Into 3rd week of grow and leaves turning yellow. Which is what told me to check PH.Anyhow added 2 tps. of Sulfur granuals (as per package directions) to each pot, mixing in to soil. Can anyone PLEASE tell me how long it will take to see results.

POHNNY Reviewed by POHNNY on 03-10-2011. Need advice:Trying to adjust SOIL PH level Soil Ph level at 7-7.5 tested.I know that's high for soil. Using 3 gallon pots, Into 3rd week of grow and leaves turning yellow. Which is what told me to check PH.Anyhow added 2 tps. of Sulfur granuals (as per package directions) to each pot, mixing in to soil. Can anyone PLEASE tell me how long it will take to see results. Rating: 5

[Rusty Trichome]

Couple of questions...
How are you testing the soil ph, and what specific soil are you using?
What's your tapwater ph, and do you adjust it before use? If so, with what?
Why sulfur? Those little pucks of sulfur can last quite a while, can burn the roots, and are quite toxic if overused. (speaking from personal experience)

Hopefully all will be fine, but perhaps next time...if need be...you'll ask here before making any drastic changes. A simple adjustment of water ph might have more to the plant's liking.

Rusty's General Rule of Thumb...nothing good happens overnight, but bad shit happens rather quickly. Keep an eye on 'em and make sure they aren't taking a dive on ya. Your answers to the above questions will determine the next steps you'll have to take, so try and reply asap.

[POHNNY]

PH Testing was done twice using 2 different methods. METHOD 1. Using Probe registered 7.5-to almost 8 on meter. METHOD 2: Test tube type tester: add soil to first line, dump in mixture from supplied capsule, add water to 4th line, put cap on test tube, shake mixture to mix , let settle and compare color in tube to chart. Same results Green color matching colors on chart between 7.0 and 8.0. Tapwater PH. about 6.5. Used sulfur granuals after reading post on here. ??? I guess patience is a virtue. Hey but any more advice is greatly appreciated. Thanks again Rusty.

[Rusty Trichome]

Am still curious what soil you're using. 7.5 ph is pretty high for a potting mix. Are you using a cactus mix...or mixing your own...?

[massbud]

u didnt have to purchase the sulfur. i was @ one point going to do the same thing cause my PH was @ 8. if u dilute vinegar u can use that to lower ur PH ive used it my self. jst use your PH tester while ur using it.. using too much could harm the plant you gotta use the right amount and most of the time its a very small amount.

[POHNNY]

Thanks massbud, but I've already mixed in the sulfur granuals as I stated. Anyhow I have them in 3 gallon pots, so based on your experience with using diluted vinegar... what was you approx water to vinegar ratio that you called a small amount? Thanks again to all, this is no doubt going to help me now and in the future.

[Rusty Trichome]

As a temporary solution, vinegar is fine. But from what I understand, ph will rise back up after a few hours. Not the optimal solution. I've been using GH's phDown (phosphoric acid) for years though. 1 teaspoon in a 5 gallon bucket brings 7.9 ph water down to 6.8ish. One gallon of the stuff lasts me a couple of years.

[massbud]

rusty is right PH down is way better but when you cant wait or cant find it ( waiting for mine in da mail ) till then im using vinegar and it worked fine. i took a cap size full of vinegar and i had to dilute a couple times because the vinegar is so powerfull so make sure you pay attention to what level u have it on.

[attemptmischief]

this is a great conversation i just started and i under stand the impotance of ph and what chemicals burns are antisipating ph problems in the future where do i buy ph down i rather have it before i need it ,,im gonna post a pic of my lil gal soon i hope its a female i just keep starting over still picking lights out ..

[Rusty Trichome]

You can get the phDown online or at a hydro shop. But test your water to verify you'll need the phDown, first. If your water is acidic already, you might need phUp. Don't purchase what you don't need. :thumbsup: