Hi I had mild algae in the pool. I just finished SLAMing the pool last weekend. I think this is independent, but now I have multiple (mostly black, some white) medium size worms in the pool. Picture attached. They are ~2 inches long. I removed all the ones I could see today. I saw 1 or 2 last week and this week after SLAMing they seem to be multiplying at an alarming rate.
Any idea what these are and what I can do to kill them? Thanks.
Any idea what these are and what I can do to kill them? Thanks.

