New ownerof Intex 18ft x 9ft x 52In Ultra XTR Rectangular Frame AGP. Krystal Clear 110-120V 1,200 gph sand filter pump. Water capacity is ~5,000 gallons. Use TF-100 test kit. Live in So Cal with Very High to Extreme UV rating. Leave pool covered when not in use. Have lots of questions so I am apologizing in advance..