mikora7, bit of moral support for you. When I started with the pool, I didn't really get it until I thought of the algae as weed. If you pick the top off a weed in your lawn, but leave the roots and some of the plant, it will grow back. Same with killing off algae, if you back off the chlorine without the algae being dead, dead, dead, it will bounce back. To quote PoolDoc "If you don't have adequate chlorine in your pool . . . NOTHING else is going to go right."

Green to cloudy is the normal progression, so you are getting there, the key is to not let the chlorine level come down. I opened my pool really late this year, and it was dark green with water bugs and a blooming eco system. Adjusted the ph, pounded it with chlorine, and it was clear in a few days. Sometimes it takes longer, sometimes less.