brown looking dust @ bottom of pool wont go away

[PoolDoc]

It could be dead algae.

I'd try vacuuming it by hand.

Ben

[fhorta]

just a quick update on situation. i initiated another post under delaing with algae forums and post is labeled "chlorine levels" that explains my progress but here is a summary:

basically i may have had some algae but it was coupled with the residue of the pounds and pounds of calcium hypochlorite that i threw in there to get rid of the algae. i was able to get the floor cleared up by using store clorox, which left no residue. i was also not diluting the granules i was using before throwing into pool so residue would settle on the floor. also, pool tech guy said that my plaster is wearing away and the brownish looking dust is sand mix that is pasrt of the plaster component. pool has a very thin coat of epoxy paint that previoous owner slapped on surface of pool just to make it look good while selling home.

so this is what i'm told and makes sense so far. stuff on the bottom of pool or on walls always gone be there because its part of the surface itself..

hope this helps other folks.