Since adding the Aquarev device to to all our properties and pools (6 total, 5 that I personally oversee), I will tell you that I'm definitely impressed and highly recommend installing them on all pools. The chlorine smell is gone, and I don't have to drain the spa twice a week anymore. Chlorine consumption has been cut down to about half what we would normally use. The water is always crystal clear. I recommend the device to all hotel owners as we always trying to do what's best for our guests