For what it is worth, I have checked with one of those 3 in 1 probes. That reads around 7. I use an electronic meter with my well water and that runs 6.3 - 6.7.
So, the plant grow media has only seen this water.If the probe is anywhere near accurate, my media tends to be alkaline.
So, the plant grow media has only seen this water.If the probe is anywhere near accurate, my media tends to be alkaline.