I went out this morning to do a test again (not the one mentioned above, need distilled water for that) but I maybe have realized something. The colors on the tester show what the ppm is based on the shade of color the water and the OTO or (whatever the red is called). If that is the case, I have a very low chlorine count (very light yellow) and a very high pH count (dark red). Hope this helps you help me.