Welcome to our forum.
Speaking of that, we always do a quick rinse off shower before using the tub. It really helps with reducing contaminants into the tub and extends water changes somewhat. I also rinse the filters every weekend and change them out with a spare set every month - the other set gets sanitized and dried till the next swap. Keeping the filters clean helps reduce the sanitizer demand because the filters don't kill contaminants, they just trap them so the sanitizer can work on them and keep them from floating around the tub. Remove those contaminants and you don't need as much sanitizer. Doing this I found it very easy to maintain water quality even using the tub on average 6 days a week with the two of us.
We have decided on the Bullfrog A7. Unfortunately we only got to wet test an A8 as they don't have an A7 on the floor. Not because the quality of the HS wasn't good. We liked the interchangeable packs and the fact that we can change them by purchasing other packs. Yes expensive, but allows more flexibility. Got the pricing to a few dollars over 10K for it. The dealer we are going through was the best dealer we dealt with, which may have had something to do with us choosing the BF. We haven't had a tub before so I am pretty sure we can't go wrong with any of them anyway. Every one of them we tried was great and they had their own Pros and Cons. I was all about a lounger but we went with the regular and I am sure I will be ok with it. Thanks for advice throughout the process.