Help,not sure what this is on bottom of pool

[haze_1956]

I have been getting the same thing for a few weeks. (the stuff in the OP's photo )

Had this stuff sitting at the bottom for about 5 days, a bit more appearing each day. Has a nice brownish green color and sort of smears a little when you vacuum it.

It seems to be pollen and dust collecting in the little divots in the pool floor. It only appears on the floor, never see any on the walls. We've had no rain to wash the pollen and dust into the gound, so I think it is blowing around and settling in the pool.

While it was there I didn't have an increase in Cl demand or any CC reading. This is another reason I tend to think it wasn't algae.