Sorry if this is a stupid question. We had an above ground pool installed last year. We drained the water past the skimmer and return hoses, detached all hoses and removed the filter in the fall before covering it. During the winter we’ve had a large accumulation of water on the cover. It looks pretty clear but there are decomposed leaves on the bottom so organic debris is present. Should we refill the water in the pool with fresh water or use the water from the cover? We live in an area where we pay a high price for water usage. I realize it will require extra chemicals if we use the water on the cover. What do most people do?