I am new here and this is my first post.... I just brought a house with a IG pool and Spa and this my first time maintaining a pool.
I have been getting some spots of green algae in my pool on the sides and it does not seem to go away. I have tried to raise the chlorine level and it made a slight difference but algae keeps coming back.
I raised the chlorine level to 7-8 PPM for a week but still algae was growing. I brushed it off and ran the pool vacuum. It comes back at the same spot and is now appearing in more areas around that spot.
TA= 110, pH=7.5, phosphate is at 400. Temperatures are in the 70-80s here. FC= 3-4 PPM now. Water is clear otherwise and the pump is running 11 hours a day for a bit more than one change over per day flow rate.
Also, how do i make the skimmer more effective? Install a weir gate? install one of those skimmer arms? Install something in the two holes at the bottom of the skimmer?
Any help would be most appreciated.