I generally don't open my pool here in northern OH until after Memorial Day. At that point, I need to add about ~1ft of well water to my 27ft AGP. Problem is my well water is high CH (800), high TA (500), high iron. I'm considering removing the cover early (now) and let the rain fill the pool between now and summer. That should reduce stress on my well, and give me better quality water.
Since the water level is below the skimmer, I can't run the pump during this time, unless I first fill the pool, which kind of defeats the purpose. My question is will leaving the pool uncovered during this time (while weather is still cool, and water will be as well) be inviting a big algae problem since there will be no filter/pump running?
A couple options I thought of
1) Add Polyquat 60 when I remove the cover, hoping it will be enough even though the pump won't be running
2) Put on my clear solar cover. Perhaps this would be enough to minimize sunlight enough to slow down the algae in this cooler weather.