i just got a digital ph tester and it turns out my tap water is 9.0, distilled 8.5. not sure how i should test the ph of the soil, could i take some soil and mix it with tap water or the runoff after i water? and assuming my soil has a high ph, how should i lower it, im going to use lemon juice to lower the water but not sure how to get the soil down, just water it, maybe a flush with adjusted water?