sorry for the late post. but everyone is right! i will try out the cup of water etc. i just tested my water. its mag is at 1470 and alk is at 9.6. ca is at 430. this is a old home. no AC i just added the wall mount ac. i just removed it and opened up the window. we will see if it helps. does anyone know how to post up my graph for the apex jr? heres the graph..