I have tiny white bumps on the sides and benches of my new pool built in Feb 2016. I started noticing them around June. They are the size and shape of a pencil point and I can scrape most of them off. My calcium has always been high although my fill water has a CH of 130. When the CH reached over 500 in July, I drained some of the water and refilled it, bring the CH to 300. The CH began to rise almost immediately and is now at 520 and little white bumps are just getting worse. I talked to the builder and he says the problem is my chemistry and the fact that I am using a swg. I test the water daily, sometimes twice a day and have kept a log of every result and action. Even with my acid feeder set to 100%, I've had to add acid frequently and at the beginning I was adding extra acid almost daily. I am at my wit's end and ready to switch to chlorine.
water temp 76
air temp 75
According to Leslie's Pool, my phosphates are high at 1000.
My questions are:
What is causing the tiny white dots?
Where is the high calcium coming from?
What do I need to do?
Thanks in advance,