Copper time
0.5 ppm Cu requires an addition of 0.75 mL/gal 1% CuSO4 solution:
- 14 gal demijohns: 0.75 mL/gal * 14 gal = 10.5 mL each
- 3 gal carboy: 0.75 mL/gal * 3 = 2.25 mL
- 3/4 gal topping jug: 0.75 mL/gal * 3/4 = 0.56 mL
I will stir this in, and we rack in about 1 week.