Hi all. I was surprised to notice my pool looked green through the ice earlier this week. It has warmed up a bit now, and the ice has mostly melted and I can see that sure enough, it is light green and there appears to be a layer of algae on the floor and walls. I'm surprised to see this as I thought with the water cold it wouldn't happen. The only thing I can think is that I left a water hose attached to a submersible pump hanging into the water over the edge of the pool for a week or more. Several days ago it rained a bunch and I was trying to get water out without turning up my main pump. Then it froze with the sumbersible in the water, and I just left it. Now I'm thinking that was a pathway for algae.
Anyway, any ideas what caused it? And what should I do now? I might be able to get away with turning my pump back on and start a SLAM. I doubt we'll be down to 0 again this year. But I'm still shocked that this happened when air temps are still well below 50 pretty solidly.
Anyway, any ideas what caused it? And what should I do now? I might be able to get away with turning my pump back on and start a SLAM. I doubt we'll be down to 0 again this year. But I'm still shocked that this happened when air temps are still well below 50 pretty solidly.