Geri,

Be careful before adding 2 jugs of bleach. If it will raise you to 22 PPM then it may bleach your liner. The amount of bleach depends on the amount of CYA you have. Folks here usually shoot for 30-50 PPM on CYA, and a bleach reading of 3-5 PPM, with a shock level of 12-15 PPM of FC. Do yourself a favor and order Ben's test kit from this site. It is head and shoulders above the rest. This stuff is actually pretty easy once you get the hang of it, and there are plenty of people more than willing to help you out.