I bought a cheap little 3 in 1 test kit. Not sure if this will help anything but I saw it and it was only a few bucks so I figured I'd try it until I can get the one you guys recommended. The CL and BR test show very low levels. I shocked the pool with 1.5 pounds of shock and added 2 chlorine tabs on Sunday. The pH test looks perfect. Everything I read about Ozone pools says to expect low chlorine levels though. Do you guy think this is a problem? I can post a link to a photo of the test results but the CL color tube is almost clear immediately as well as after 5 min. The pool looks great though, the water could not be clearer.