Help cleaning up a pool, after algae

[rourke]

Before:


After:


Still very cloudy, can't see through.

Used chlorine, levels are high but that's not what I'm worried about.
Ph seems very low and alkalinity is not even on the scale (very low).

How do I eliminate the cloudiness and fix those 2 levels.

Make sure you look at the pictures, they might be distorted seeing as they were photomerged.