Its been a while since Ive posted but Im always visiting and reading. Trying to figure out something with my chlorine recently. Here are my numbers via TF-100 and then Ill post the question.
water temp 71
Ok, I wanted to raise my FC to 4 ppm and confered with the pool calculator which suggested that I add 3 quarts of liquid bleach based on my current CYA level of 30. After adding the recommended dose and circulating the water for approximately 45 minutes I checked the FC, via TF-100, for a base line and discovered that the FC was at 2 ppm. My question, should the chlorine have dropped from the attempted 4 ppm to 2 ppm that quickly? The test was conducted in the evening in order to verify if I would lose more than .5 ppm over night. The next morning I obtained a reading of 2 ppm. Believing that I did not have any issues based on my FC levels holding over night, Im still wondering why I didnt get a 4 ppm reading when I first added the chlorine as suggested to raise my initial chlorine from .5 to 4 ppm via the recommened dose. Your replys are greatly welcomed.