Thank you Evan, that does help. Everything you explain helps me learn more about what I'm doing. The water is still green, as well as cloudy so I guess I will keep working on the algae with the chlorine. So far I have put 33.6 gallons of CL in since Tuesday noon and there is very little noticable difference, but this afternoon both my husband and I think the green is a lighter shade and I can now see the bottom step clearly where before I could only see the first two steps. So, it appears that something good is finally starting to happen!