Odds are that part of the cloudiness is so much calcium. With high calcium levels, combined with high TA and pH levels, calcium will precipitate out and cause milkiness in the water. To solve that, sometimes lowering the TA will clear up the water when calcium is the problem. The steps to do so are here http://www.poolsolutions.com/gd/lowe...p-by-step.html. Also, don't add any more cal-hypo--switch chlorine sources to either dichlor or bleach.

About the chlorine--are you testing with with a drop-based kit, or strips? If strips, then it's possible the chlorine is high enough to bleach them out. If you're testing with drop-based kit and still getting zero, then you have something using up the chlorine. What was your source of chlorine last year, and what was your CYA level at closing? If it was high before, and low at beginning of this season, then it could have been broken down into ammonia, which can create a HUGE chlorine demand at first. Have you added anything else (algaecides, clarifiers, etc) that may be creating a chlorine demand?

Janet