The Heavy vs Light Water Paradox
Underground water represents light, receiving Jala energy in the North-East. Overhead water represents heavy physical weight, which must load down the South-West.
Water Tank Vastu separates Underground and Overhead storage: 1) Underground Water Tank / Sump / Well: Must be in North-East (Eeshanya) or North/East to attract prosperity, 2) Overhead Water Tank: Must be in South-West (Nairutya) or West/South to add beneficial structural weight to the Earth zone. Never place underground tanks in SW or overhead tanks in NE.
Underground water represents light, receiving Jala energy in the North-East. Overhead water represents heavy physical weight, which must load down the South-West.
Common Clarifications Answered by Sthapathi
Consult directly with Master Sthapathi A. B. Sivan for on-site plot visits or CAD drawing audits.