Been dealing with an algae problem for the past two weeks that won't go away. I'm going to be draining my pool 70% to get my 160 CYA level and 3600 phosphates level down to more healthy levels. Please see pics taken earlier today. 2 weeks ago my pool went from crystal clear to deep forest green in literally 36 hours! After shocking the heck out of it for the past 2 weeks with liquid chlorine (which apparently isn't going to solve the problem because of my ridiculous CYA level, hence the pool drain) I'm almost back to cloudy blue. But these pics taken just today...are all those patches on the bottom mustard algae or pollen? This has definitely been an expensive lesson to learn regarding levels of FC that were too low, combined w/ levels of CYA (only using liquid chlorine from here on out) and phosphates that were way too high and ultimately, having to drain the pool. But the algae ain't gonna beat me! I have updated bottles of every bottle in my K-2006C test kit in the mail to me right now as I type this! Thanks!