Ok, this might be a dumb question, but here goes... When doing a diluted ph test (for example when fc is over 10ppm), the instructions are to dilute the pool water with an equal amount of distilled water. So, if the pool is at a ph of 8 for example, and it is diluted with distilled (ph of 7), won't that produce a result of 7.5? Other diluted tests require doubling the reading to account for dilution... Don't we also have to double the amount +\- 7 in order to get an accurate ph (in this example, the results are .5 over 7, so double the .5 and add to 7 resulting in the correct ph of 8)?