Two years ago I installed a fiberglass swim-spa shell. Because I was building it myself, I plumbed everything identical to a pool. It's got a remote equipment pad, Jandy-Managed, DE Filter, 1x 1.75hp recirc pump, 2x 3hp jet pumps. It's about 900 gallons, never covered, in South Florida sun.
Once I got it running, first thing I did was to find this forum and begin using the BBB method. By the way, thank you to everyone here, you've saved me from some really nutty advice that I would have otherwise considered from Pinch-a-Penny, when going to buy my CYA.
Over the past year, I've had to travel/be away from the spa for several weeks at a time (or sometimes I'm home and I just don't remember to add Chlorine). Since I never use Dichlor/tabs, other than when starting, my TA and CYA generally stay put and that's all fine. My only issue is the fact that I'm always going down to 0 FC, as you'd expect, because of my horrible maintenance schedule.
Today... I read a post about someone whose had good luck with Spa Frog (I know, it's not a favorite around here, but follow me for a second...) This caused me to wonder... If I were to install a Pool Frog, tweak it to the proper setting (remember that I have a full pool-style setup and the spa is 900 gal, so the Spa Frog would get costly and would fall short) ... I would be using the mineral feature, and throw bromine tabs in the interior, rather than buying the Chlorine Bac Pacs, which is the only option for the Pool feeders.
When I get home, I'd throw in the MPS to shock it, but other than that, I'd hoped it would be kept stable once I tweaked the feeder to get the optimum numbers.
1) Does this logic make any sense? I'm not an experienced water chemist like many of the members here, and I'm a bit over my head on predicting where the issues could be, or whether this is just a pipe-dream.
2) Although the Pool-Frog unit can use pellets that are not in a Bac Pac (in their 'SaniKing' line), I'm not sure if this presents an issue when using it in conjunction with the mineral resivoir?
Sure, I could call King Tech/Poolfrog, but I'm sure they'll tell me I cannot use free tablets (since they make their money selling the BAC PAC version of the pellets)
Thank you in advance, for any suggestions!