I see plenty of posts and web searches that say "add Calcium Chloride" to raise calcium hardness. Got it. Now tell me "How to add the Calcium Chloride" some say dilute some not, some say so many pounds per hour...do not exceed, test after so many hours before adding more etc...blah blah blah...help please??? I need to raise my hardness well over 200ppm to get into 350-400 range for my SWG, pebbletec pool ASAP.