35K gal plus, in-ground, painted concrete, one skimmer (bottom drain is non-functional), two returns -- Hayward Vari-Flo XL Valve Filter, Century A.O. Smith SQ1152 Replacement 1-1/2 HP Motor -- Taylor K-2006 Test Kit -- Pool Pal Android App -- Successful convert to and lover of TFPC method. https://i.imgur.com/Cx3xVAb.jpg