All last summer was spent fighting green and black algae. Pool water was 6 years old so we drained it during the winter. This summer began like a honeymoon with little chemicals needed to say within the limits. Salt water pool with Hayward equipment. Green algae returned about 3 weeks ago. This weekend we are shocking the pool. What I have noticed is that the green was growing at the base of the pool skimmer grout around the tile.
We have a sheer waterfall that is not used routinely. I am wondering it the green algae could be growing in there? We live in AZ and I test the water weekly. I have been pretty vigilant about getting the leaves and flowers from my neighbors tree out of the pool. I don't understand why this brand new water is doing this...again.. Oh yes the chlorine has been right on or high so don't tell me to increase that.