I made their stock solution in a 32oz bottle. The instructions say that 1ml of the solution will raise the MG in 1us gallon by 6ppm. My display tanks MG content is 1,100ppm. I wanted to raise it to 1,200ppm in my 100gal tank. By my calculations that's 1,700ml of stock solution. I have a feeling I've made a big miss calculation, so I haven't dosed the MG. Any ideas?