RO WATER

Greenthumbgrower1986 · Nov 24, 2023

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Billy the Mountain said:
As mentioned above, that's not a valid or accurate test if you don't use distilled (or RO) water. There's a good reason distilled water is called for when doing a slurry test to determine pH of the growing medium.

Adjusting the pH of tap water is not a valid substitution for distilled/RO water.

I'm still doing some serious learning right now. I know it won't be accurate but would it not indicate that the soil pH has risen though(sorry if dumb question) as if the water is 7 and then rises when soil is added?

RO WATER

Greenthumbgrower1986

Well-Known Member