if you are in soil, use dolimite lime & you wont need to worry about PH, it will take care of your PH unless you are pouring battery acid on the soil.
next ??. how good is your meter? cheap garden store ones can be off. its easy to check, milk should be about 6.5,orange juice about 3.5 & ammonia about 11. my first was a combo moister/light/ph probe for about 5 bucks & showed everything I tested had a PH between 6.5 & 7.5.