Tub4-2

Hi dlleno, I've used Hot Tub Serum in my two person hot tub that just my wife and I used a couple of years go. We would bath before getting in the tub and the tub has an Ozone generator and a Nature2 stick in the filter housing(https://www.nature2.com/en/spa-products/nature2-spa). We used the tub for about a year back in 2017 and after getting the $100/month electric bill jump decided to un-plug the tub. I wasn't testing the water at that time other than it's visual clarity. I changed the water twice during that year and it stayed pretty clear during that time with some occasional surface bubbles that I would skim off. Given the current stay at home situation, it's time to recommission the tub and get her ready for some more soak time. I used the Total Cleanse Watercare before and still have some and am upgrading the insulation around the tub as well as getting solar on my roof. Though, I'd really like to find an energy efficient way to heat the spa rather than the 240v instantaneous heater, if you have suggestions there, I'm all ears? I wasn't reading this blog back then, but figured I have more time to learn about how to get the water conditioned and keep it as comfortable and safe as possible with the minimum about of chemical treatment. Appreciate your diligent self analysis and experimenting with Hot Tub Serum from your blog link, cuz I still have 2/3 of the bottle left and would like to finish using it. I'm slowly learning about adding the Chlorine or Bromine, but am wondering about the affects of the Ozone generator and the Nature2 stick and then the addition of either chlorine or bromine? Also regarding testing, were you using one of the Taylor kits as suggested here, or were you using another testing method? I feel like once I get it cleaned and flushed and ready to fill again, I should have a better plan going forward. Any answers or comments to the above you can share would be appreciated. Looking forward to getting back out for a soak, thanks, Mike