Michael F.

I'm also interested in hearing more. I work for a cedar tub manufacturer; we have our recommendations but we don't get a lot of feedback from customers unless they end up with a problem they can't solve on their own. There's a lot of great user feedback in this thread, and if soakytime or anyone else starts a new thread I'll be looking for it! We used to provide low ppm dichlor with ozone; we switched to low ppm dichlor with an ionizer to improve the residual, and we're considering adding the ozonator back in to act as the shock. Like I said, feedback is hard to get, but our customers seem to have a pretty good success rate with both of those systems. When they do come back to us with problems, they're usually either too afraid of chlorine to use even a very low dichlor dose, or they didn't pay attention and added exponentially more dichlor than prescribed.