I noticed what looked like two small spots of black algae on the top wedding cake step. Brushing with my regular nylon brush would not remove the spots, so I purchased a small stainless steel brush. This removed the two small spots. As I was brushing I noticed a white cloud rising from the brush. Two questions:
1. Will the SS brush damage the PebbleTech finish?
2. If not should I brush the entire pool with the SS brush?