Indoor How do you test PH.

[vv15629]

So I tested PH of my feed water with 1/4 strength bloom nutes. It was 6.0. Fed plants then tested run off it was at 6.2, so is it safe to say my soil PH is in the middle at 6.1?

 

[Dr. Babnik]

pH - potential of protons... pH, pH, pH.

You are doing good. Just make sure your input is in the right pH range. pH of the run off may contain lots of stuff washed out and I suppose soil it self has a cetain buffer capasity, depending on the minerals added by the manufacturer. I use dolomite lime to increase the buffer capasity in my soil.

If you want to measure pH in your soil, you would need a kit for soil samples. Or you can estimate it...maybe, by measuring clean water, mix in some soil, measure and do the math. I don't know if it works.

I asked the same question as you and our esteemed Doctors of Autoflowers told me not to worry about it.

 

[AutoWonders]

Are you using coco and the like or straight soil? If soil, you are on the low end of ph.

 

[vv15629]

I'm using just fox farm soil. Two plant looks just fine. The biggest one appears to have PH issues that's why I started testing it. I got the same reading of the run off from all three plants so confused what's up with the one.

 

[Racintweek]

If your runoff was higher than your input then your soil in more than what your runoff is.

It's not an exact science to know specifically, but it's give you an idea.

 

[vv15629]

I see what ur saying @Racintweek its prob better to estimate the soil ph is 6.4 based off the readings