Hi new to the forum and had a few questions.
I am located in Arizona and have 13,000 gallon inground plaster pool. Our pool water has been turning greenish when we add chlorine. We were originally using shock but have switched to liquid chlorine. I went to the pool store to have our water tested and he said the CYA was 160 and we needed to drain the pool after this season as it is too hot now in Az to drain it now.
I just tested our water with a taylor test kit and the fc is higher than 5 it's as high as it goes on the kit, PH is 7.2 and total alkalinity is 150ppm
Our water is green right now and always turns green after schocking or adding liquid chlorine. They tested the water for metals and they said it had none. I am not sure what the problem is or what needs to be done?
Also what are the steps we have to do to maintain our pool with 160cya and be able to safely swim in the summer. How high should FC be at and how much liquid chlorine at 10% would I need to add every few days to keep it at that level?
Please let me know any information or if you need any more information. Thanks!