Steam6418

I had also experienced the same cloudy water condition after using the Baqua Spa system for several years with no problems. After trying numerous remedies (including all known tub plumbing purge products) over the past 3 years, I recently performed (2 months ago) the following (which I found on another forum) which has completely solved this issue. I drained my 400 gal hot tub and wiped it down, removed filter, then poured in 12 gallons of common concentrated laundry bleach (not low splash) found at local grocery store. I then filled hot tub with water to normal operating level, brought it up to maximum temperature (104 degrees), then let it run and circulate for 36 hours. Next, I drained the tub and wiped it down again (observed numerous tiny white/tan gunk particles). I then added water again, and as level reached about 1/4-1/3 full, I stopped adding water. I then turned power on and pulsed jets on maximum just enough to power flush out internal plumbing, then shut jets off and turned power back off. I next drained hot tub and wiped down again. I then refilled hot tub completely, brought it back up to max temp (104), and ran for another 24-36 hours (with cover off as much as possible to help degas water of residual chlorine). Lastly, I drained hot tub and wiped down again, then refilled, brought up to normal operating temp, and resumed Baqua Spa chemical treatment system. Water has stayed sparkling clear, just like when tub was new. I believe the root problem was biofilm in the internal plumbing that couldn't be detected by typical chemistry test strips and more in depth local spa dealer testing. The cloudiness and odor would always worsen after a few days as the biofilm bloomed, and adding more Baqua Spa sanitizer only enhanced this bloom once it has taken hold. I hope this helps others, it clearly worked for me.