White streaks on fiberglass pool

Split from White, chalky stains and Zea3

It's July 2015 and I've had this white streaking problem in my 1.5 year old Blue fiberglass Viking pool. Viking says a precipitant occurred. Yes...and what can be done to remove/eliminate the white streaks from below my waterline in this new Viking pool?

It responds to wet/dry sandpaper 800 grit. Anyone have time to do a little snorkeling in my pool?
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.