What type of Chlorine do they use for these systems? They call it SmartChlor but don’t specify other than it’s not dichlor. Just curious....
Its a proprietary chlorine: DCDMH (I think). It is Di-Chlor, but a special type that they have patented. Aim is to have the FC at 0.5ppm w/the TC at 10-15ppm. I have the off-line floating @ease in my spa and I love it. I can go a week (don't be like me, this is not an endorsement of not checking your spa for a week and actually pretty poor spa water management) sometimes w/o checking the water if I am very busy with work, etc. and the sanitizer is always where it needs to be. The Bullfrog type will be different than the in-line (Marquis, Caldera, and Artesian have exclusivity on it) as it will be in the filter area.
In all, I really like @ease. Not saying it is better than (fill in the blank type system), as I've used almost everything out there. Right now, however, @ease suits my busy lifestyle. I suspect I'll eventually do what I always do and that is go switch to something else (working for a hot tub manufacturer, I always have to be on top of all sanitizer types). But I've been on @ease for a while and I enjoy it.
Key is: Keep spa temp above 94F, and keep pH in line always.
I hope this helps. Good luck moving forward.