Sea Salt for Vastu & Feng Shui Rock salt crystals can effectively improve the air, wind energy - the "vitamins of the air". (Vastu element-wind) Sea salt used in feng shui and vastu are powerful eliminators of negative energy, It also absorbs the negative energy in the environment. Rock salt uses: - Existence of negative energy in the room can be cleared by placing a rock salt in four corners of the room. Placement of toilets in north east, south west or south east can be cured by placing a Energized Vastu salt in glass bowl. Replace this rock salt every 15 days. This can be used to wipe the floor once in a week to have a frequent space clearing at your home or office. This can also be kept near the door to keep the evil eye away from the house. This can be placed near the sick person to generate healthy energy. Keep Changing Salt Crystals Time To Time And Put It Under Running Water the Negative Energy Out.