AG Tahoe 16' 54", vinyl liner, 6500 gal, Calimar 1 hp single speed pump w/ 19" sand filter. June 2016 install replacing a 9 year old Intex ultra frame 16'. Sitting on 17.5' x 6" concrete pad with rebar. 20' x 2.5' solar heater. Going to get Taylor K-2006 test kit.