At least 15 years ago, I bought an ozonator for my above ground pool, very similar to your current product PZ4 Ozonator. I bought it then through the internet and at a time when most people knew nothing about use of ozone for pool water. The device paid for itself in 2 years and worked perfectly until this spring. I live in Maryland, so I’ve run the ozonator only from spring to fall. It was stored inside for the winter, together with pump.
I thank you again for this great product. For the past 15 years I have been telling everybody who had a pool to stop wasting money on pool chemicals and to buy your product. We even love the faint smell of the ozone when we swim in the pool.