So my wife wants to add a water softener in the house and everything I've read online indicates that not only are water that comes out of the softeners bad for the plants, but they are also bad for fish. However, this is based on what I've read up on salt-based softeners as, apparently, the salt-based systems work off an 'ion-exchange' process which replaces all minerals in the water with sodium ions. The system I am looking at is a salt-free system which physically change the structure of the hardness minerals to take away their ability to bond and stick to surfaces, and to each other through a 'Template Assisted Crystallization' process.
So my question is, will a salt-free system also affect the plants and fish in the same way that a salt-based system would or would it be ok to have it installed without any danger to the tank inhabitants?
