I have a one yr old 10,000 gal in ground Gunite pool, water temp is 77 degrees. I test chlorine and PH daily, my PH goes up about .2ppm-.4ppm daily, my TA seems to go down quickly, but not as fast as the PH changes. My chlorine is always stable, I add about 10oz daily. Can someone tell me why my PH might be going up so much. I know having a new pool can cause this, but the pool is a year old and the PH doesn't seem to be slowing down at all.
Any answers welcomed.