sand filter - hayward pro series
I'm lost & confused. The SWG pool we inherited when we moved is set at 10% chlorinator. I'm finding the need to "super chlorinate" after a day or so use to keep up with chlorine levels. Should I increase the overall chlorinator percentage? Or is 10% a good default? The filter has been running a lot in order to heat the pool (Vancouver weather has been amazing and have recently been using the pool for 3-5 days consecutively). And is the super chlorinate option ideal to bring up chlorine? Or should we use chemicals? Our CYA was low but now in range.
Also just a curiosity- there's a lot of white streaks/ stains on the pool liner from previous owners. What can I do to avoid creating more?