Ok, not to gross anyone out, but we've had our cover on our pool for about 4-5 days now, since we had a cold snap.
Things have warmed up, so I thought in advance of the weekend, I'd pop it off and get everything setup. We've been maintaining roughy 4-5 FC at 30 ppm CYA the whole time.
Anyways, as I was taking off a section of the liner, I noticed a bunch of white tubular type things, about half an inch long, white in colour. At first I thought they were some sort of plant petal that had blown in, but one moved. I took a closer look, and I'm not positive, but I think they were maggots. On closer inspection, there were about 2 dozen floating on the surface, most not moving. On the bottom though, there were a couple clumps of them, all dead, with I would say over a hundred.
At this stage, I still had the whole cover to remove, it had some bumps under it. I was pretty sure I was going to find something dead floating in the pool, and figured it would be at least somewhat substatial due to the quantity of the larvae. Happily, nothing was dead in the pool.
Anyone have any thoughts on where so many came from? Maybe it is some other sort of insect larvae? We don't have much around here though but mosquitoes.