New pool built appx 1 month ago. I have read pool school. I have been running my Eco-Matic ESC 36 for 12 hrs a day on 100% and have avg. 1-2 FC. Water is clear. This SWG is supposed to be for 40,000 gallon pool. After reading on this forum, I ordered the TF-100 test kit. I am afraid my SWG is not putting out enough chlorine. After running it 36 hours on 100% this is my reading. FC-3 and CC 0.5. Also there is a big difference in my reading and the pool store. I know I have stabilizer in pool because i added it. Added more to get to 70-80 cya per pool school. I have done the test two times and both times 20 or less on cya. Pool store has CYA at 76. I know from reading the test is subjective. I went outside with back to sun and black dot never disappeared. I have enjoyed reading the forum and learning. I have added lo'n slo to drop PH. Thanks for any advice.
Pool store 7/17/10
CYA- 20 or less