I have used this product for 3 years in a hot tub that I rehabbed. It needed a new outer frame and siding. Pumps were good and even the ozone gen worked.
At the time I wasn't TFP so I was against chlorine smell. Didn't know anything back then.
I use Cleanwater Blue and non-oxi shock. pH up, pH down. That's it. Plus the ozone of course. I haven't changed the water in all this time. Not once. Never had 'itch'. No rashes. Not even on fair skinned redhead granddaughter.
Since we have moved from that house and left the tub behind, I've had my son check on it. He says it's still doing fine and has used it a time a two, after mowing the lawn. He has kept up the dosing and cleaning the filter. He was able to replace a bad control board and heater so I figure he's earned the usage.
I'm just wondering what the general consensus is on this product and is my experience typical?