Hello TFP! I've posted on and off in the last 9 months or so...
New pool owner (never wanted the "hassle" of a pool), but it came with the house we bought, so now trying to make the best of it... you know, for the kids!
My cover had lots of leaves, and water and pollen gathered throughout the off season. This lead to a nice leaf stew of swamppy porportions. I managed to rake it all up, and pumped out all the water. With a huge storm coming, I figured, lets open the pool up so that we don't have another swamp growing on the cover.
AND then I realized - it's green! not terrible, I can see through to the bottom; there's some debris down there, leaves and things that apparently got in there. But there are also floaty insects (my guess is mosquitos). So I didn't connect my pump or anything yet. It's wide open, sitting there.
I don't know that this is algae, then again it's not normal for water to be green, so who knows. I read through some of the sticky about algae (what a great write-up!)
Going to pool store tomorrow to get some readings.
Is it a Bad thing to just dump out ALL the water and start from scratch?