The grandkids are getting older, and they don't use the pool as much as they used to, but it is still a hole in the backyard. With the cool spring we've had, the pool didn't start to "green" up until recently. Our pool is a salt pool and the device that turns salt to chlorine doesn't work until the water temp gets to a certain point, about 60F.
Belle doesn't like that florescent green color in her pool. She much prefers a blue tint to the water. So, yesterday, I shocked the pool with an addition of raw chlorine. This morning, I added afour bags of pool salt, or 200 lbs. That is normally the amount required to kick-start the maintenance. I'll wait a day or so, then start balancing pH.
I've heard it said that a boat is a hole in the water that you pour money into. LIkewise, a pool is a hole in the ground that you pour money into. Thankfully, as pools go, salt is fairly cheap. And, as our pool tends to go basic, muriatic acid is also fairly cheap.