Any Swimming Pool Experts?

Had a friend recommend trying here to get a couple suggestions on a pool
problem.
My mother's pool has terrible algae stains on the vinyl liner of her
gunnite pool.
After hurricane Ivan the pool sat dormant. Now there is what I can only
assume
is algae (I am an old SPS reef tank guy) all over the bottom. I tried
scrubbing with
a stiff brush but that has just about no effect. Her neighbor is
supposed to be watching
the chemical balance, but I don't think he has a handle on it.

Is there anything I can do to get this stuff off?? Any suggested product
or technique?

One suggestion I got from another group was to put Shock in a tube sock,
tape the sock
closed and attach to the pole and rub the liner (watching for excessive
bleaching of the liner).

Here is a link to a pic. You can see it on the steps and the bottom. It
almost looks like cyano but
doesn't brush off.

http://personal.atl.bellsouth.net/r/.../algaepool.jpg

I know water testing, I just have to look up what the parameters and
what to test for.
I'm assuming Chlorine, Ph, CAL/Hardness.

Link to my reef tank Hurricane Ivan took :-(
http://personal.atl.bellsouth.net/r/...yler/side4.jpg

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Ric Seyler