Need help with cloudy water in brand new pool

[Jeffski]

My pool was completed with pump and SWG installed about a week ago. My builder was responsible for getting the water balanced at start up but he only shows up every third day or so and water remains very cloudy. I can't see my feet when standing in the shallow end. Ugh.

I will continue to hound the builder until it's right but am hoping I can fix it faster with your help.

18x36 rectangule, 3.5' in the shallow and 8' in the deep (roughly 22k gallons I think). SWG is set to run at 40%. I tried bumping it to 60% for one day and then up to 80% the next but that didn't help. Pump runs at least 12 hours a day. The light on the SWG says I need to add salt ( it is between 2500-2900) but the builder added more 3 days ago and thought it still needs to stabilize.

I used some test strips (left over from hot tub, sorry) and they tell me my free chlorine is around 0, PH over 8, and total alkalinity around 180. Obviously chlorine is very low and PH and alk very high.

I know I need to have my water tested which I will try to do today, but any advice based on what you've read so far? How long after adding salt will it take for my SWG to read it acurately? Do I need to dump in more chlorine? How do I handle the high PH and Alk?

Please help!