Quick question, I watched a youtube video showing how to perform the calcium hardness test, which ask to fill the water to the 25 ML mark not the 10 ML mark as the directions on the TF-100 kit. Also it ask for 20 drops of R-0010 instead of 10 drops and 5 drops of R-0011L instead of 3 drops. Why? I understand that is a matter of ratios, but the ratio seems to be off, as if 10 ML requires 3 drops, 25 ML shall require more than 5 drops as 25 ML is more than double 10 ML so it shall be the drops required to perform the test correctly. I know I shall trust the TF-100 kit directions over a youtube video, but just wanted to confirm just in case.