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SunPurity Mineral Purifier
tony:
Hi Electro
I now use the sun purity mineral purifier made for sundance by nature2. In the past, I have used a spa frog. They both work just as well. You can use the standard N2 or frog cartridge in your sundance spa. Just place it on top of the filter, not inside it. The flow going past it is the same as the sun purity in the brominator.
I am a believer in the mineral purifier system, but only when used with chlorine as you plan to do. Maintaining the .5 ppm will be impossible. Just add enough dichlor after use to get the level to 2+ ppm and the level will drop to nothing by the time you get back in. In the meantime, your minerals will be taking care of any low level sanitation needs the spa has in between use. It also helps during long periods of non use (such as vacation). Shock weekly with dichlor or non chlorine shock.
You might try www.shepnell.com for sun purity prices. They tend to have the lowest prices for sundance parts that I have seen, though I have not priced the sun purity catridges there yet.
Good luck and congratulations.
tony
tony:
One other thing. Trying to get the temp down to 75 in the summer may not work. I have a hard time keeping mine under 100. I set it at 98 for the summer, but it is sometimes hard to keep it there. I program my circ pump to run only at night and do most of my filter times then also.
Electro:
Tony,
Thanks for the info. ;D I wondered how long it would take for a chlorine level of 2 or 3 ppm to drop below 0.5? Also, when you say the level will drop to nothing before you get back in, can you be more specific? Typical homeowner test strips do not measure below 1 ppm and the chemical test kits measure to 0.5 ppm.
I plan to plot readings from 3.0 to 0.5 ppm and extrapolate the results down to at least 0.05 or even 0.01 ppm. The reason is that scientific tests done by researchers at several major universities have made it clear that the effectiveness of silver and copper ions for disinfection are fantastic, vastly superior to other current and traditional means of disinfection, as long as at least 0.01 ppm chlorine is available along with the ions.
I'm curious to know how you determined that the Nature2 or similar Spa Frog would work by placing them just above the Sundance filters? Or is this just common sense?
Electro
tony:
Electro
You are absolutely correct regarding chlorine being more effective when used with minerals (particularly silver). It will take maybe 18-24 hours for it to drop to very low levels. I use a Taylor Test kit and I can only measure down to .5ppm, but it generally shows no color in 24 hours. If you are fairly consistant with the way you tub, you will soak in just minerals and after use, the chlorine will do all the heavy work. I like to shock at least once per month with dichlor to get a superchlorination. Get it up to 10 ppm to do this.
If you place the mineral cartridge inside the pleated filter, you are only going to get flow when your two speed pump is on. If you place it on top, you get flow from the 24 hour circ pump, which is preferable. The cartridge will not fit inside the micro clean filter which is the one that services the circ pump. My dealer set me up this way.
tony
Electro:
Tony,
I have wonderful news. :) ;D You were right about www.shepnell.com and the Shepnell Pool and Spa company (a Sundance dealer). I called and talked to the owner (Barry), who is now, as a result of my phone call, placing the SunPurity units on his web site. His price is about the same as for the Nature2 units, plus 5.99 S&H.
Barry indicated that his Sundance customers have used the regular Nature2 units quite successfully when placed inside the filter. But, they tend to forget about it until the water begins to get nasty (after 5 months or so), since it is out of sight. With the SunPurity units that he now encourages all customers to use, the device is visible and customers do not forget about it. He is well aware of the superiority of the mineral ions, with a very low chlorine level, to perform disinfection.
The Shepnell company is highly recommended!!
Electro
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