Quote Originally Posted by britinusa View Post
I have the Nature2 system, I disagree that it is too good to be true, Both My wife and son have blond hair and have never had any issues with green hair.
It does use metals to assist in sanitizing the pool, but I have not had any problems that people associate with that.
The cartridge costs $100 and mine last for 2 seasons, so it costs me about $50 per season, we use around 4 ozs of granular chlorine a week, plus you use a "spring" cartridge for the start up at the start of the season it costs about $24.
Always have sparkling clear water it is softer as the Nature2 does use minerals.
Most people will advice against it, but I am a fan of it and I don't have any issues with my water.
I am speaking from my own experience with the system and that fact that I do not have any problems with my water chemistry, green hair, algae or metal staining.
Ok, you are not using the system the way the manufacturer says(and the manufacturer's directions is how the system got EPA approval!)...the carts are supposed to be replaced every 6 months. They don't last longer so you so not have sanitized water. The copper will keep the water clear since it prevents algae growth but it does not keep the water sanitized since the CT time for copper is much longer than for one of the three EPA approved sanitizers. If you are keeping the recommended .5 ppm FC in the water with an old cart your pool might not grow algae but it certainly is growing bacteria and viruses!

FWIW, I have sold both N2 and several brands of SWGs in the past and have helped many customers with both systems. I am not a fan of the N2 even though it was a GREAT profit generator for the store.