I'm getting ready to close my AG pool. I finally got the water balanced after having a stubborn algae bloom. My fault. We have an Aquashield cover and I didn't even open it last summer or this until I noticed the green water.

Could someone explain what a "weir" is?

I have a Hayward sand filter. CarlD mentioned removing the valve and placing a "travel/storage retainer" that stabilizes the intake tube. I'm assuming by valve you mean the thing that the handle in on that one twists to select the filter mode? I've not removed the top for the winter before (and the decal shows it) but I do remove the lower plug and tip the filter so that any water runs out. Is it better to remove the top? Where does one find a "travel/storage retainer?

Our pool is surrounded by trees and in western PA we get snow and freezing temps. I've been covering the pool filter and heater with tarps over the winter. Haven't noticed any problems with doing that yet. I do remove the pump, hoses, and Clorinator jug which I no longer use since being converted to the BBB way but since the pipes into and out of the heater are drilled for the tubing, I still hook it up.

Another question although with the Aquashield is probably moot for me...Why an Aquadoor if the water level is below the skimmer and the vac hole anyway? If it rains into the skimmer, the water just goes out the open hole in the bottom. I tried a gizmo one year (before the top) but it just popped out. Tried an Aquadoor too but I didn't drop the water. The ice crushed it into shards.

Thanks for the answers in advance.

CoffeeBean