What research wasn't appearing earlier is now coming up. I've seen some comments about people replacing the control valve fixes the pea green pool water (which is exactly what I have right now). It also makes sense since the valve has been difficult to rotate for the past several years. One person even had the bearing pop out and that required a rebuild of the valve for a small part. I just ordered a replacement control valve and I'll see what that does.

While I'm hoping a new control valve fixes the problem, I would still like any input from the users here as I build my knowledge database.

I'll update once I have the new valve in place.