As you may know I recently bought a hot tub, now I am trying to come up with a maintenance schedule for chlorination, etc. I know this will take some fine tuning, and there are a number of factors at play, but I hope to get things close to an equilibrium point so everything flows routinely.
The tub is a Hot Springs Jetsetter J 215 gallon capacity, it is equipped with an Ozonator (new Del APG-U), as well as a SWG (Saltron Mini), and has a place for Hot Springs Freshwater (rebranded Nature 2 AG ion) cartridge (currently has cartridge of unknown age installed). The Ozonator is set up to run 24/7 same as the circulation pump, and the Saltron Mini runs X hours per 24, so always runs at the same time of day. Expected usage is 1 person 3-4 times per week for 30-45 minutes mostly in the evenings (to help with back pain). I hope to set the run time on the SWG so it will run overnight and allow FC to drop back down some before the next day's use. CYA will be kept in the 30 ppm range (using pool water to fill the tub (it is nice to be able to refill the tub in about 3 minutes with a fire hose).
I am currently working with an FC goal of 3.0 ppm for the SWG to maintain, allowing a drop to 2.0ppm before evening use. Then boosting back to 3+ ppm after soaking using 8.25% bleach. Do these numbers sound sane to you, when using an SWG plus supplemental ozone, also should I worry about the nature 2 stick? The trouble I am having now is knowing how much I should boost FC after tub use to oxidize bather waste, there just seem to be too many variables and I don't want to stay out of the tub for a week just to balance the SWG operation. Any advice you can give on this subject is most welcome.