Ok, so I got a PH meter, and I tested the runoff in the catch tray after I watered with some RO and Cal/Mag. Went with a tsp of CM in a gallon of RO water. After watering and letting it stand for a bit, the water in the catch tray PH was like 5.5. The soil looks like it could be coming in right around 7. Just wondering if I should be worried about the PH or not?? Plants seem to be growing pretty good, but I would still like any input!