Effect of pH 9.1 water on growing herbs indoors?
I phoned a local aquarium supply store and they very generously were willing to test the pH of my water with some fairly high-end equipment. My town's water department had told me that our water is at 6.9, so I was pretty surprised at the results of this test: 9.1. They recalibrated and tested a second time and got 9.3. Ouch.
I've been trying for a few weeks to figure out what would cause my basil leaves to look gnarled and crinkly, and a consultant suggested the very alkaline water could be an important factor. I notice that some of my arugula leaves are now looking the same way.
What do folks here imagine the effects of water this alkaline would be on trying to grow basil, oregano and thyme indoors under grow lights?