High CYA and algae

[Watermom]

If it has stabilizer (CYA) in it, you should not be using it. Just use bleach. Don't throw them away. Close them up and you can use them next year if your CYA drops over the winter.

Do you have a reputable pool store that can test for you? We need a CC (combined chlorine) reading.

Also, do you know how much chlorine you lost overnight from sundown to sunup?

I know your party is tomorrow, but it is unlikely that your chlorine is going to come down much between now and then. I wouldn't want to invite people to my house to swim in my pool where I was fighting something in the water. The high chlorine level won't hurt people really but they should wear their old suits.

I wish that you had come here to the forum sooner than yesterday. It is kinda hard to help somebody clear up their pool in 2 days. I know you can't for tomorrow, but you might want to consider doing a partial drain and refill and try and get that CYA to a more manageable level or you're gonna struggle with having to run really high shock levels anytime you do have any problems (which will be any time your chlorine drops lower than 8.) If you haven't already done so, take a look at the Best Guess table in my signature below where it explains the correlation between CYA and chlorine levels.

Especially if you decide not to do that partial drain but instead are just gonna live with that high CYA, having the good kit is imperative!

I'm sorry we aren't being more help, but the time frame is just not enough to adequately take care of this properly.