Thanks for the helpful info. So I can use tap water to flush plants that are grown in soil. I've been told that this flushing will remove the salt, mineral and nutrient build up that can cause a plant to lock out needed nutrients. The thread I read recommended running water thru the plant container until the water coming out of the container drain holes is clear, then let all the water drain and then water with adjusted PH water when you go back to the regular watering and nutrient schedule unless you've flushed your plants in anticipation of harvest and curing. Is this correct info? Thanks, Rob