We just bought a house with a pool and the previous owners used an ionizer. With the high winds we have had here lately the winter cover blew off, so I figured what the heck and took a sample of water to play with. They left a couple basic drop tests (chlorine, ph and copper) behind so I tested the ph and copper. The copper test showed .7ppm. From reading other posts, that sounds quite high. Should I be concerned and if so what can I do? Just to be clear I do plan on ordering the TF100 test kit when it gets closer to opening time. Thanks!