Another iron stain story.
This year, when the pool cover was removed, I discovered six Pennsylvania field stones, that I use for garden edging, at the bottom of the pool(granddaughters confessed). Got the stones out and got everything running but I noticed the tea stains on the walls and bottom of the pool. Never having this occur in the past 20 years I thought it would go away but it didn't(evidently iron leeched out of the field stones and attached itself to the liner). I found the posts here on correcting the situation and have all the chemicals needed for the AA treatment. My questions are 1.) the Algaecide 60 recommends 2-4 ozs. weekly, is this sufficient while the chlorine is absent/low. 2.) Any guess on when the choline will be low enough to start treatment.
Water temp 83