Got my FC and CC tester today. Right now our readings are FC=3 CC=less than 1 pH=7.4 TA=270 CYA=30. Does this all look OK or do we need to do anything? I'm still curious about an auto cleaner that I posted before this one? Any suggestions--bumpy bottom--vinyl ag 20'? Thanks again for all your help!! Oh, how often do I want to shock the pool????