This is my first season opening the pool and I need help. The water was dark green and is now light green after a day.
Here are my numbers:
CYA <20 (I could still see the black dot with the tube filled to 20)
Is there anything that I need to raise or lower or keep things as is? I've been grounding up Tri-Chlor for Chlorine. I'm in MD and replace almost all the water every season, so no need to worry about high CYA.