Recent content by RobQ

Hi All, I have an inground pool of 22,000 gallons, Vinyl liner (replaced last year), sand filter and 1.5 HP pump. Just tested my water wit the Taylor K2006 test kit (thanks to TFP for the info) PH 7.7 TA 150 CH 200 FC 0.5 CC 0 CYA less than 30 I have a sand like residue on my liner (bottom...