do you need both systems? if so why?
What does everyone yield with hard water? I am just curious about how much it effects everyones yield. I get about 350 grams for a 600 watt light.
You need both because using an RO system alone without a water softener you'll burn through RO membrane's like there's no tomorrow. That can get expensive in a hurry.
from what i understand about water softeners (and i could be wrong) they don't take anything out of the water, they change the charges in the ions. i have been running RO for years without a softener and have never had to change a membrane. my system has both a particulate and a carbon pre filter, i always thought these were standard on any RO system. am i missing something ?