I live in Vegas and have high phosphate issues all summer. Trees shedding junk into pool and phosphates keep shooting up into super high ranges. I've been using concentrated phosphate remover to bring it down but keeps going back up. Now alkalinity has also been pretty low lately. Also I've got a whole bunch of organic stains on the quartz that have been there for almost a year. Tried scrubbing with a pumice stone and a stain remover stick, works a little but still a bunch everywhere. Wondering what anyone might recommend? I feel like I'm just dumping tons of money on chemicals at Leslie's and problem isn't getting better. Water was just added this spring and usually doesn't get this bad this fast. Swim season almost finished but any advice would be appreciated.