TheMo

The 1st time using Spa Purge I let it run for about 24 hours and had great results. The next couple of times I've used it since I let it go overnight - meaning the evening prior to changing the water I pull the filter, pour in the Spa Purge, and drain the water the next day when I get to it. I really needed to purge the 1st time so I let it run longer. It won't hurt anything and I felt better giving it plenty of time to do it's job.

My TA was measured at 50 following the shock with 4 oz MPS - down from the original of 60. 3 tbs of baking soda and an hour of aeration had the TA reading 60. The tub was then covered for the rest of the day. The next day's testing provided the following results: FC 1.4ppm CC 0.2ppm pH 7.4 TA 80

24 hours after adding 1 tbs of dichlor my FC is 5.5ppm. Still not sure what affect the ozone may be having on my FC dissipation, but its a boat load less then a tub in need of a super shock. Thanks again for the advice. You guys rock.

The super shock has definitely done something. I added the 4 ounces of mps yesterday and then 1 tbs of dichlor later in the evening. My reagents bleached to yellow instead of clear while doing the fc check today so I suspect the chlorine is high? The color change occurred at 8ppm fc. Also, my pH is down to 7.0. I've got the tub running wide open with all jets, aerators and blower running and will check again later on. In any case, reading fc the next day is vast improvement! Thanks Hillbilly Hot Tub. Nitro - I'm planning on using your bleach method after my next water change. I need a nice day and some free time to drain the tub and those are hard to come by this time of year, but hopefully within a month. Thanks for the input, it's much appreciated.

I'll try super shocking. How high should I go fc ppm to super shock? My combined chlorine measured 0.6ppm a week ago.

Hi. I have an '07 Sundance Cameo, purchased as the last '07 display model in August '08. The tub has ozone, nature2 and I use dichlor to sanitize. The problem I have always had is maintaining any residual FC. The water right now is 2 months old, crystal clear, has no odors. The dealer feels that water being balanced and so nice and clear is all I need to be concerned with. He shrugs my concern off and says that the ozone and nature2 along with a weekly shock will handle all my needs. This message board, however, has convinced me otherwise. I shock weekly to 10ppm FC (taylor test kit) use mps as a boost when needed, and use 1tsp dichlor per person per hour following tub use. My concerns about residual FC being at or near 0 have always troubled me, but yesterday, following the weekly shock, within 8 hours I had 0 FC. Usually there is a residual 1 - 3pmm the day after shocking. The tub is used a couple times a week, often times by myself alone, so the bather load is light. I keep the water balanced roughly to the following: pH ~ 7.5 TA ~ 60 CYA creeping up to 100 CH 100 I've read that ozone will dissipate the FC. To what extent does this occur and, other then my tub being diseased, could the ozone be the culprit?

I had the same question prior to wet testing both series. The jets in the 880 series are (to me) significantly better. So much so that I purchased a Cameo. Concrete is being poured today! Spa delivered by the end of the month!