I purchased my Bionizer in 2010 (over 5 years ago) and could not be happier with the product and service. Ian has always responded quickly to my inquiries and the pool is always crystal clear. Probably the best compliment I have received was approximately 2 weeks ago when I invited a friend for a swim and he said, "I would normally decline, but swimming in freshwater feels too good to pass up." Also, my kids have asthma and even though I cannot definitively say that the Bionizer has alleviated their symptoms, it does give some peace of mind that it could be. Lastly, the financial and time savings over the years have also been fantastic. I highly recommend the Bionizer and the Bionizer team.