Please forgive the temporary thread-jack; I feel this begs a response:
If your tap water is 9, and your soil shows 7 AFTER watering, you can be certain you have RAISED the soil pH by watering it, not dropped it. If you were pouring RO through there I'll bet you'd see that your soil is 6 or even lower.R.A. said:stinkyattic,
my tap water is 8.5 to 9. After watering, soil PH drops to 7.5 or 6 during a period of few hours.
pH is a function of the activity of H+ ions in the water that is there.R.A. said:It all has to do with the concentration of water as it evaporates and/or gets sucked by the roots.
Simply in reference to buffering. Even GOOD soil loses buffering capacity over time indoors. The post to which I replied clearly states that soil will adjust its own pH. This is simply false.R.A. said:Who said anything about old sacks of soil?
No attitude, just clearing up a couple misconceptions. It's a plant problems forum. Excuse me for not breaking it to ya gentler...R.A. said:and why this attitude