Hi folks! Pool maintenance question! We have a stack stone retaining wall that has waterfall bars that flow down into our pool (I'll try to attach a pic below). The stones look a little "bleached out" compared to when we had the pool put in 4 years ago. We also noticed some white build up on some on the stones. So I have two questions:
1. How do we effectively clean the stack stone to remove the white build up while NOT damaging the fiberglass pool shell (and also not damaging the stones). What product would be safe to use?
2. Would sealing the stones bring some of the color "back to life" the same way that sealing our coping or concrete does?

1. How do we effectively clean the stack stone to remove the white build up while NOT damaging the fiberglass pool shell (and also not damaging the stones). What product would be safe to use?
2. Would sealing the stones bring some of the color "back to life" the same way that sealing our coping or concrete does?
