And one more. A 100 gramm of rice contain a 100 mg of P. Perhaps it balanse with N as 1:10. So we will have a 1000 mg of N or 3000 mg as NO3. In 100L tank we will have a 30 ppm trates from 100g of rice. That is completely out of concern.
Yes, but what might be getting trapped in or on the grains might be of concern, as well. Some folks are having some stuff growing on the grains that might be adding to the problem, as well as organics which maybe adhering to the surface of each grain.
DJ

