RO/DI filter

[craftsman]

Hi, I'm exploring the feasibility of using a Reverse Osmosis/DI filter to facilitate a drip system for continual water change. Just wondering if any bros here are using such a system? Would really appreciate if you can share how much the system costs to run. By that, I mean what is the frequency of filter changes (does it go by number of litres of water it filters before a change is required?) and how much each filter costs?

Thanks very much in advanced!!!

[ricowtr]

I use reverse osmosis for home consumption but have never thought about it for a fish aquarium, I think it can be tried because RO functions to filter out viruses, bacteria and other microorganisms.