M macwmv Well-Known Member Apr 20, 2009 #1 my water is 250 ppm when im adding my nutes do i subtract that from the total ppm Eg. 500ppm-250 ppm (water)= 250 ppm? is that right?
my water is 250 ppm when im adding my nutes do i subtract that from the total ppm Eg. 500ppm-250 ppm (water)= 250 ppm? is that right?
