So I slammed my pool until the algae was dead and passed the Overnight chlorine loss test. I have only used Clorox in my pool and never had a problem, however, this opening year I can't for the life of me get the water crystal yet. I have vacuumed and brushed almost daily and left the pump running for 2 weeks solid, still no luck. All of my water parameters are tested with the Taylor 2006 and are right where they need to be....The sand in my filter is going on 2 years old so not sure if it's time to change. Any advise from the experts would be greatly appreciated..Thanks, Chad