OK, now I get how to alter the pH of my soil! StinkyAttic explained to me!

"Use your commercial PLANT pH up/down- not the kind for pools- ad add it dropwise until the fertilizer solution is at the correct pH for your grow style.
The ideal 'middle' of each range is given here:
Hydro 5.9
Soilless 6.4
Soil 6.7
If you find your soil, for example, is giving a runoff that is too low, water with fert solution that is lightly HIGH- around 7.2- until you see that the runoff is in the correct range. If the runoff is too HIGH (much less common), use ferts at 6.2 until it improves. It's easiest to do this as a flush- all in one shot.
Be careful of shocking the plants with water that is more than a full pH point off their ideal range, even as a flush solution. "

Sweet.

One last questioin to you all if I may?
How much can I trust the General Hydroponics Control Kit for testing the pH of my soil? Is there a/are there better product(s) on the market for this?

I ask because I see members postings stating that a pH of 6.x is the best for growing, but my testing kit only gives me a ballpark idea of where my pH is at.
SWABLR Reviewed by SWABLR on . Yellow leaves Currently have three of my daughters in their third week of flowering and I have yellow leaves showing up. Also, have tested the pH of my soil and find it ranging from 7.0 - 8.0, very alkaline. I would like to get my pH back in range, 6.0 - 7.0, but do not know how to go about it? Any help you can provide is appreciated. Below is the Trouble Form I have filled out and I hope that I have provded enough information so that you will see what I have done wrong and what I need to do to correct Rating: 5