A question regarding the SuperSoil. I've set up 2 x 3 gallon Air-Pots as recommended, and have a Grape Crinkle and Alien v. Triangle that are each about 2 days old now growing in the soil, so far only receiving distilled water.
The Web site says "just plain water from seed to harvest." What does that really mean? Should I stick with RO/DI or distilled? Use tap water (ppm about 240, pH in low 7 range)? If tap water is OK, must I pH it? - to what?