Please Help Me (Sue) with My Pool

This Spring we are having trouble with our pool.

We opened the pool it was clear, I added a gallon of chlorine (first time doing this - not sure why I did it) and about 20 minutes later it turned intto a milky cloudy pool. It's been 2 weeks and no change. We added water to the pool, too. Could this be the problem? Is it something with Bayville water. I know they're working on the water pipes through area of the town near me, Berkeley Shores.

So, my pool guy came out, he said it's phosphates. OK, put in stuff for phosphates, back-washed, vacuumed, and still milky one week later after doing that.

Yesterday we put a clarifier in the pool, waited 8 hours and no change. We tried it again, back-washed, vacuumed, and still a thick milky cloudiness. We can not see the bottom.

These pictures don't look as bad as itt looks in real life...

Any ideas would be greatly appreciated, or should I just empty whole pool, vacuum and clean the empty pool and start over? Thoughts? Did this ever happen to you?

Thanks for your help! HELP us find the bottom of our pool!