Quote Originally Posted by rmeden
One person last year reported a bloom every time the Nature 2 would need to be replaced, so it had to be doing something. That's the only evidence I read that it works.
I wonder. The Nature2 is supposed to work by filtering water rather than by putting something into the water, right? So if algae enters the pool, how could a filter help to kill it or prevent it's growth?

Maybe there's something I don't understand about how it is "supposed" to work.