Hi Master Yongsang Cho,
Can I conclude that, for JWA solution making, between distill water, drinking water (reverse osmosis) and rain water, it is best to use distill water (no Ca & no Mg), while second best choice will be drinking water (lowest trace of Ca and Mg) and lastly rain water (potentially contain Ca and Mg but low), am I right to conclude this?
Thank you in advance, Master Cho!