clear water that turned green and now is swamp brown!

[guest]

HELP!!! I had totally beautiful, clear pool water. Then I got this little bit of brown stuff that was sitting on the bottom of the pool, when you moved the water around it the brown stuff would make a little "poof" and eventually there was enough that when the kids swam the water would get cloudy. We used clarifiers but it always settled on the bottom again. Then it turned a little yellow and the next day the deep end was dark green. You couldn't see the bottom. I added algicide and the pool turned brown and you cant see the bottom anywhere. I added 3 bags of burn out and sitll nothing. It's Brown and gross. We ended up at the public pool today...HELP!!!