Ok so after years of using granular Calcium H. i switched to the Tri tablets. Put about 6 in the chlorinator at filter max flow. Does it take a few days to see Chlorine level rise? its barely registering. I shocked pool (30k gallons vinyl) when i opened. My ph is 7.2 Alk little low in process of bringing that up. Am i doing something wrong. Do i need to shock again bring Chlorine way up then let tabs maintain? Can I add some granular to through skimmer basket to give it a boost? (i know i cant had it to chlorinator where tabs are) would that be safe? Any help would be appreciated