> and add enough ammonia once to bring it to 5ppm. Having a bit of trouble envisioning the math formula for this to get an amount.
Five parts ammonia for each million parts water, yes? 20 gal / 1,000,000 = .000002 gal = .0075 ml .0075 x 5 = .0375 ml ??? Do they make droppers that small? =8>O Or am I a bit off in my formula? Ed
