Any trace minerals needed is in Greensand. I use well and/or rain water. I also shake the watering jug up prior to watering, to add oyxgen to the water. I also use 70 degree water, not "shocking" cold water. I also, if in Pots, leave 2 inches free of soil on top, so I can flood the pot, add water fast enough to completely cover the top of pot, & keep pouring water for at leat 30 secounds. What this does is force all the "old" oxygen out, the water wall, as it sinks, causes a vaccum that puts in fresh oxygen. In the ground plants (my favorite method) is build a small dam/berm around the area, & flood it. One gal. on small plants, 2 & 3 on the bigger Ladies. When you do this, you will see the air bubbles come out of the ground. This is what you want. The air bubbles. I'm omly allowed so many words per post.