I've been a pool owner for about 6 months now. The water was green and cloudy when I moved into the house, so I opted to have the original pump and filter replaced back in January, and the pool had been clean ever since. I've been putting off testing the water, and just blindly dumping in a half gallon of 12% chlorine every week.
Well, now that the weather has warmed up, the water has taken on a greenish hue again. Not totally nasty, since I can still see the bottom, but I figured it was past time I started learning the chemistry.
FC = 0
Ph = 8.2
TA = 120
CH = 440
CYA = 0
Based on Pool School and The Pool Calculator, sounds like step one is to drain about 40% of the water. My main drain and skimmers are all tied together, so I'm off to Home Depot for a submersible pump. I'm pretty close to sea level (on landfill) and not quite sure how to determine what the groundwater level water for my area is. The USGS site shows 22 feet Below Land Surface from about 15 miles east of me.
Safe to start pumping?