Hello there. After purchasing Calcium Chloride to adjust my CH level per the Pool Math app, I have read on here where it is not absolutely necessary to monitor ones CH level in a vinyl lined pool like mine. What are your thoughts on this? Just thought I would do a little research on here before dumping the 13lbs of product to bring my CH from 125 to 175.It is best to add calcium chloride in small batches so you can be sure you get it fully dissolved when you broadcast it in the deep end. Brush well.