I noticed that the moderators test their water in the winter. I have two questions about this.

First, I use a safety cover for my inground and do not really have access to the pool water. How vital is checking the water in the winter?

Second, do you add chemicals in the winter without the pump running? I would be concerned about adding acid in a very small corner so close to the liner with no water circulating.

That being said, I usually open to a green pool that takes 2 to 3 days to clear. So, my current strategy (2 bottles of PQ and FC=10 with CYA 30) is less than perfect.

Tony