Did a complete overhaul on my indoor pool. Noticed that in the deep end very noticeable white streaks were forming. It has been only 30 days since it was filled. Please help. Contractor wants to cut out that section and put new pebble. Of course my fear is that it will never match. He does not think that draining and acid washing will correct the issue but i have been told by a couple of pool service companies that it will. Check out the bottom step too.. Any advice is much appreciated. I want to make sure I’m not being too picky too..