I'm a new pool owner who has an IG pool built in November 2011 in Austin Texas. The first year I battled PH and alkalinity while the pool was curing. Now that I have those fairly stable I've ran into an issue when the pool will not hold chlorine.
I run my 2hp variable speed pump at 100 percent 12 hours a day and have done so since starting the pool. I clean the pool and adjust chemicals once a week as needed.
I add Pool perfect phos free once a week, brush the pool, add chlorine to the auto feeder, add granular shock, and clean the skimmer and pump baskets. I add sea clear algae preventer to the Pool every three months and scale free once a month.
Until the past month or so the pool has been great. But now I can't get it to keep chlorine. The pool store keeps telling me to shock the pool and turn up the auto feeder. The auto feeder is now higher than it has ever been at 4 and I'm using a lot more shock than ever. The chlorine tabs I use are stabilized and they are dissolving.
I still have the same results of no or low chlorine levels and high combined chlorine levels.
Below are what my pool levels are today from the pool stores read out. The pool store told me to add chlorine tabs to the skimmers and shock the pool again.
I don't have a lot of faith at this point in their advise.
I appreciate any help that you can provide. Thank you.
FC - .2 ppm
TC - .6 ppm
Combined C - .4 ppm
Ph - 7.6
hardness - 330
Alkalinity - 80 ppm
Cyanuric acid - 100
Total dissolved solids - 1400
Phosphates - 250
Temperate of water - 74
Outside temp - 85