I installed a SWG 2 weeks ago. I got my water analysed, added salt and after a couple of days I succedded to balance the correct level for the PH, the chlorine and the total alkalinity.
My problem is if I keep the total alkalinity between 80 and 120 as recommended, all the walls of my pool are turning orange! (I've got a fiberglass pool)
I have to keep the alkalinity below 50ppm to have perfect white walls.
Is that normal for a fiberglass pool?
Can I add something to the water to keep it between 80 and 120 and have no stains?
Thanks for any advice.