I filled the tube to the 25ml line and put in 2 dippers of R0870. It did NOT turn pink. From my understanding that determines that I have no free chlorine. Thats why my pool is green....LOL....Anyway. Having a 14500 gallon pool above ground pool I should be shooting for 5 ppm of FC. According to the calculator I need to add 150 oz of 6% bleach to my pool. I am assuming there is no reason to go on from here until I get some reading of free chlorine first. Am I correct on the assumption? Should I add the whole 182oz jug of bleach to shock the pool and take a reading tomorrow a.m? :?: I am also assuming that since the first part of the chlorine test didnt turn pink the rest of the chlorine test will not register correctly also. Please be patient with me. I am trying to do this right from the beginning. Please respond in idiot terms Thanks