Ok, had pool originally filled by having water trucked in, Since then I may have to add an inch or so of water weekly via hose from my 500+ ft deep well. When we have our summer downpours then it really isn't necessary. I'm wondering if adding small amounts of well water is going to put metals in my water. I have never used any metal removers, and until recently I have been adding algaecide after it rains. I have since learned on this forum that if I keep my FC correct than using algaecide isn't necessary. Hope I'm doing all this right! My water looks so nice, I'd hate to screw it up!!!!!