Thank you to all that provided information, very helpful. I think I was making a bigger deal out of it than it is because of the low water usage. I figured it the same way I always do but just lowered the water/k and came up with the same numbers y'all did.
Mr. Putman, can you explain your technique for mixing dry granulars or powders in your measuring cup. You just mix you DG or powders in the mixing cup and use the spray wand to agitate and mix the product till its disolved and then dump half in each tank?