24 hours later. I have not been home yet, but my father called me and said that water is not as clear as it used to be (foggy?)

Why would it be foggy? Because Chlorine 0? Algae bloom?

How much chlorine can I put in? I know that I have to add it in small amounts, but how small? 1 bottle 3/4 Gal? 2 bottles?

Should I add some Borax? I don't know how much my PH is at this time.

Thanks,
B