There are very few scientific and analytical data on the difference between NWA and tap water, but NWA is preferred because it allows visual differences in crop growth when using NWA. Sorry for not being able to give you a clear answer. thank you.
Cy Rauworth2021-08-09 23:34:17
I am wondering what the rocks on the bottom 8-12 inches are for. Does this help add minerals to the water?