Eureka Lemon ( lowering Ph of 511 mix)

9 years ago

My 511 potting mix is measuring a PH of 7. What are some safe and organic ways to lower the ph levels to what I understand are ideal at 5.5-6.5?

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Comments (4)

cjlopez04
Original Author
9 years ago
Found this on Amazon, it's a phosphoric acid based product to lower ph levels. Has anyone used this product? Is it effective?
evdesert 9B Indio, CA
9 years ago
Your ph is good, at neutral you're fine. I wouldn't add that acidifier to your 511 mix.
Evan
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greenman28 NorCal 7b/8a
9 years ago
How did you test the pH of your mix?

I've only used that particular Acid with hydroponic systems.

I agree with Evan. The pH of the medium itself isn't as important in containers as it is in the ground. So, if you lower the pH of your fertigating solution to the range you mentioned, all will be well.

Josh
hoosierquilt USDA 10A Sunset 23 Vista CA
9 years ago
What Evan & Josh said. There is no need to adjust your pH. Citrus are not "acid-loving" plants. They actually prefer a more neutral environment, 6.5 to 7.0. If you're worried about your water being too alkaline, just be sure you're using a high-quality pH meter. The cheap ones are notoriously inaccurate. You may find you have nothing to adjust :-)

Patty S.