Welcome to our forum.
12 months in to this and my take is disappointment.Chief frustration is the iFrog system. I have to run both the silver and chlorine cartridges on 6 and the chlorine lasts maybe 10-11 days and never completely empties. Spa runs 4 out of 12 hours in standard mode in winter and econ in summer. The fact that the chlorine can go to zero so quickly means pseudomonas is being removed for fourth time this weekend. I have spoken to both King Technology and dealer and no one wants to take on the task of truly finding out why the chlorine always shows minimum free and 2-5 total. They claim its the water going in thru a charcoal filter; my position is something is in the spa since new. But when they look at the health dept well analysis they can spot whats doing it.Beyond that the waterfall doesn't work right and never has. the frog tub had to be replaced to enable better water flow.Just been a very high maintenance aggravating PITA. Finally found silver cartridges for $13 each if I buy 10 at a time, but that's $1 per day just for iFrog chlorine.
Your tub is a huge tub so the frog system might not be the best system for you