My solar cover seems to be causing a strange pollen problem. Here are two scenarios:
Without the cover:
Pollen blows into the pool and eventually collects in small drifts on the bottom. If I vacuum up the drifts slowly, I don't have to vacuum the whole bottom, just the drifts.
With the cover:
Pollen covers the entire bottom of the pool and the sloping walls (not vertical walls) with a micro-fine dust. I have to vacuum every inch of the pool bottom when I take off the cover.
My thought has always been, perhaps this is algae? But my water is crystal clear, and I've tested FC at night and the next morning twice, and it only dropped 0.2ppm the first time and 0.4ppm the second time. Also, the stuff avoids the vertical walls and is not concentrated in the shady areas -- it's "broadcast" over the entire pool bottom, like someone spray-painted it!
I just bought the solar cover, and now I feel like throwing it away. It's plenty humid here, so we don't have much of a problem with evaporation. Also, it doesn't seem like it's helping to hold the heat in the pool much! Did I waste $150?