Welcome to the forum! We need a little more information about your pool. There is no set amount of bleach to add each day. It depends on what your current water testing results are. I can tell you this, in a pool this size, each 3 qt. jug of bleach will raise your chlorine level by 2 ppm. Super shocking is simply adding a large dose of bleach at once to raise your cl level up. How high you need to shock to depends on your CYA level. Post some current water testing results taken with a drops-based kit (not test strips) and we'll take a look and be able to better advise you. If you don't have a good test kit, we recommend the Taylor K-2006. A good price for it seems to be at this place. http://www.amatoind.com/taylor-k2006-test-p-555.html

Re: pets --- All I can tell you is that my sister has a pool and she lets her dogs swim all the time. How often to shock after dogs swim? Depends on if your CC (combined chlorine) goes up afterwards. Safe for cats to drink? I have NO idea, but I wouldn't think so.