If you keep your microbes alive and occasionally recharge/keep them alive. Add compost teas or molasses or as mentioned. Micco/great white/recharge. More bacteria/microbes/fungus. You create what is a living soil that requires little maintenance and basic tap water/rain/water. As long as the water isn’t full of chlorine/chloramine or crazy levels of other contaminants that would prove detrimental to the organisms living in the soil. No pH adjustment is required. The soil will take care of the pH itself. To put it in way more words.