I have a new fg pool being installed early October. I have researched your question myself. Before you get too excited have your water tested for metals. That is usually your source of stains. If you do have high metals you can treat for it and hopefully avoid staining with different sequestering agents. There are many posts in the "stains and metal matters" thread. I too was worried but these guys on here will put your mind at ease. hope that helps.

Donnie