I have been losing chlorine rapidly. These factors are in play: a) The pool is in direct sunlight, b) we have had a heat wave in NJ so the water has been between 88-92 degrees, c) the pool is fairly active and used most of the day, d) my CNY is below recommended levels. I know that the combination is a recipe for chlorine loss, but I am not sure how much.
As an example, I brought my FC Friday evening to 10, no one used the pool Saturday, and the reading Saturday night was less than 1. The black dot on my CNY test does not disappear even with the tube filled, so I know my levels are below 30, just not sure how much.
The other numbers are:
The pool is crystal clear but I typically pour in 3 bottles of 121 oz/8.25% liquid bleach each evening and it is depleted in one day.
The recommended CNY levels in Pool School is 30-50, so here are my questions:
1. What number in that 30-50 range should be my target?
2. I am assuming that I need to purchase stabilizer from a pool store to bring up the CNY, but do I listen to them or how much would you guys suggest I add?