If this is posted in the wrong place I apologize but it seems appropriate. I have a poly water tank that I'm going to use for RODI storage. I'm going to keep RODI water on hand for top off and mixing saltwater when I need to. I would like to put a hose bib on it but the only fitting I can find to make it work is brass. Is that going to be a problem? Obviously the tank itself is new and only one small piece is brass but I don't want to cause any issues for corals (any type) down the line because of one fitting. If it were salwater I know brass would be a problem but will this brass fitting add anything harmful to my otherwise pristine RODI water? Thanks for any advice.