I have had it for around 5 months. I have all the original packaging and instructions. It is a good product, people just dont know about it. Anthony calfo talks about di water alot and loves it. You use kalk (lime) to recharge one of the canisters muratic acid to do the other. The kalk side needs to be recharged. All you do is sit it in a bath of lime and water over night thats it. Look through the threads about di only water. its a nice thing to have and you can save yourself a bit of change.. ohh yeah, the resins never go bad so you recharge them forever.....