Need help with pool...was green now light blue

[swiftb73]

We have had our pool cover off since early June. However, our pool pump was gone and needed to be replaced. It was old. After weeks of trying to get a contractor out to replace the pump, we finally had it replaced and then the pump kept tripping our circuit breaker. We finally got that resolved and now we are left with a green, swampy pool. I have been diligent in getting it cleared up. Shocking it like crazy, vacuuming, and backwashing. It's clearing up, but I'd like some advice from the experts here. I had the water tested at our local pool store. We have a vinyl lined, inground pool. It's about 25,000 gallons. We have a Hayward Proflex EC-65 DE filter connected to a 1 1/2 Horsepowered Hayward super pump. A chlorine feeder is also connected. The pool store gave us the following results:
Total Alkalinity >100
PH>7.2
Cyanuric Acid>0
Total Hardness>300
Total Chlorine>1
Free Chlorine>1

We were told that the water seemed to be in good condition, but that we needed about 4lbs of Cyanuric Acid to stabilize the chlorine. I bought some of that but wanted to do research on it and whether it was safe to add to the skimmer. Our pool water is still cloudy. It started off green, but now it is a light blue and we can faintly see the bottom of the shallow end. There is some dirt on the bottom that we are working on vacuuming out as well. Any additional help or suggestions would be greatly appreciated?Thanks!