I was trying to see what this water okay for using to top off my reef tank I've been using tap water since I got into the hobby a couple years ago just never really had the time or ever got that deep into the hobby to get a RO system so i have a 5 gallon reef thank not to big and i want to try something different i tried this before all my three gallon and everything. I think I was using spring water but thanks to reef2reef I don't have to make the same mistake i can always just ask first and overall I just want to see any different would be noticeable in my tank




