Too many variables for us to know how long to run your pump to keep the pool clear, and to generate enough chlorine.
I'll say this again, get yourself a good test kit, know what's going on in your water. Stay out of the pool stores and don't waste your time with test strips. I recommend this kit TF-100 Test Kit ™ and get the salt water test kit K-1766 Taylor Salt Test
Do some reading on this site, you won't need to go anywhere else Trouble Free Pool
Start up and closing... Swimming Pool Start-up and Closing
Thanks!