Principle
How Much Planetary Energy Trees, Mirrors, Water, Yantras and Metals Capture
Only about 55 percent of the Sun's energy reaches the earth. Of that, trees and plants capture about 95 percent, mirrors 80, pyramids 65, water 60, yantras 60 to 90, metals 45 and stones 35, while plastic and petroleum by-products capture none.
Metal objects such as iron, gold, silver, brass, copper, ashtadhatu and bronze: about 45 percent
Room decoration in general; plants are chosen by planet and direction