This is a simple method to getting rid of algae in a pool step by step:

1. BUY "FLOC"
"Floc" or Flocculant is a chemical that is sold in every pool store.
Just pick up a bottle or granular and follow theses instructions.

2. Turn your pool filter on
3. Add The FLOC to your pool. As much as need, I say the more the
better.
4 Run pool filter for about 2 hours
5. then shut off your pool filter
6. Wait about 8 to 12 hours and then check your pool. At this time
your pool should be clear except all the alage will be at the bottom of
your pool.
7. Hook up your manual pool vacuum and before you start vacuuming turn
your sand pool filter to "Waste" or your DE or Cartridge filter to
drain. If you do not have these opitions then remove your drain plug
from your filter and vacuum

Note: water will be thrown from the filter so it might be wise to hook
up your backwash hose.

8. Vacuum up all the green alage until the pool becomes so cloudy that
you can no longer see.
9. Then shut your filter off and start the fill up your pool (cause
you loss so much water from vacuuming)
10. wait until the alage settles to the bottom again and continue to
vac until all the algae is gone.

for more info on this contact me at
My website for pool care will be up soon @ http://www.swimuniversity.com