Things are going well...test kit should be in tommorow. Took pool water to pool store, said it all looked good, with 0 CL and 0 TC....CYA were dead on....I came home added 1.5 gal of 6% bleach to get the levels up...I have a 18,500 Gallon AG pool.....How much should I put in? This Texas heat is HOT, HOT, HOT! Thanks in advance!

Charles