Sorry if this has already been asked, but I’m not finding any good answers for my situation… I am using RO/DI water for my freshwater tropical tank, with no plants. I’m using RO/DI water because my tap water has unusually high nitrites, making it very difficult to maintain ideal conditions...

Hi everyone, Im setting up my first saltwater tank, and Im thinking of getting a RO/DI unit. My tank is a 40g +20g sump, and Id like to find a RO/DI unit that I can attach to a hose (i have a hose faucet in my garage). Also, I dont mind if the unit takes long to make water. Ive been doing a...