brown looking dust @ bottom of pool wont go away

[PoolDoc]

If it's already settling to the floor floc won't help . . . and yes, it may make it worse.

Add DE to your filter again, but watch the water stream from the return: if it becomes cloudy, or even visible, your filter probably needs work. Dirt bypassing the filter can definitely cause problems like this.

If your filter is NOT the problem, then you need to try hand vacuuming. Leave the DE in the filter, HAND vac the pool, and then backwash.

Now the fact that you've added floc *may* mean that you've suspended some of the dirt in the pool, till the floc breaks down. However it may settle with no circulation. So, after you vacuum, raise the chlorine pretty high in the PM, and then turn the pump off overnight. If you have dust in the AM, hand vac again.

That may take care of your problem.

BTW, you can test your AquaBot with DE too. Put a small amount of DE on the pool bottom, and then guide the AquaBot over it. If DE comes out of the AquaBot's exit port . . . you may have found your culprit.

Ben

[fhorta]

thanks for the tip on aquabot. i will try that. so, to summarize:

we are leaning towards the assumption that this stuff is not some sort of algae, becuz if it was the high levels of cl would have taken care of the problem?

also, even if the aquabot was not picking everything up, and some of this stuff was getting by and getting filtered back into the pool, would this stuff settle back down here and there, right? but the stuff is spreadout evenly all around the surfaces. also, whatever the vacuum would miss, would the sand filter pick up. there was no visible DE in the water when i poured it in, so i guessing hte filter is working... so much to learn.. thanks

[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.