this is our 3rd year with our 15 x 18 oval above ground pool. It has a cartridge filter and an ozonater. The first year it was crystal clear for the whole summer. We have never been able to get it back to that state. We go to the pool place they have us by tons of chemicals and still not as good as it was. Can someone first tell me what we should be putting in the pool for opening and how much and then What we should be putting in weekly to maintain a healthy pool. We have pretty good water in our area no hard water or well water issues. Thanks in advance.
