pool care with the nature 2?

[PFlynn]

My friend has a nature 2 and she said it works.
Will my blonde hair turn green if I use it? Do you really need less chlorine?
any information will help me. she said she uses powdered shock with it. I would think both kinds are the same.

I know this thread is old, but I've been gone for a while and can't resist.
I had a N2 cartridge when my pool was first built and screwed around for 2 and a half seasons before coming to the conclusion it had no benefit except to the people selling it. Once I just switched to a conventional chlorine regimen it solved most of the problems I had been fighting with the N2.

N2 provided a very expensive lesson in snake-oil.