I have just moved into a new house with a pool and have taken over maintenance of it from pool company. I have installed a Hayward AQR9 AquaRite SWG but am having issues maintaining chlorine levels. When testing CYA levels with TF-100 kit i loose sight of the black dot well before it hits the 100 indicator. This is even after a 75% drain of the water. It used to disappear much sooner. I can only assume pool service company bumped stablizer level up as high as possible so that FC was maintained between weekly service visits.
I have done an overnight chlorine loss test and only lost about 0.5ppm so I don't think I have an algae issue. However the SWG does not maintain chlorine FC level over a longer period of time. I'm running pump for 12 hours a day with SWG at 100%.
A couple of questions:
1. Can having to higher CYA stop Hayward SWG from working correctly?
2. If initial FC level starts at lower than recommended levels for CYA will FC levels drop quicker
Its my understanding that the higher the CYA the less chlorine loss you should see. I would therefore expect SWG to easily be able to keep up.
Any help would be much appreciated.