The intellichlor IC-40 v1.9 that replaced my almost 3 year old v1.6 has a setting that I've never seen before. I can now set the percentage of chlorine production in both pool and spa mode whereas before, it was only one setting for everything.
My pool and spa share the same water so I can't imagine the need for different settings for each mode in my application. I'd appreciate any insight that you may have regarding this.
If it matters, the default setting when I first turned on the SWG was 60% for the pool and 2% for the spa. I kind of wondered why that was so far apart too.