I am beginning to lose my CYA level in my pool as a result of some loss of water thru a possible tiny leak I need to get resolved. In addition we have had a lot of rain.....Before I discovered this pool site I had purchased from Leslies a big bucket of 3 inch tabs which I discontinued using when I began the BBB method you have led me to use. I have a 16000 gallon plaster pool and what I'm trying to figure out is how much CYA a tab would add to my water as a way to bring my CYA back up to my desired level, then discontinue using the Tabs again....I have the necessary chemical on hand to test the CYA frequently to monitor the CYA level while this is raising is taking place with the Tabs.Any guidance is greatly appreciated as I can't find any information on this site that can help me. Many thanks, John