So here is my dumb question contribution. Is RO/DI water ok for drinking consumption. Yes, "he did ask that question".
Reason I ask is that i see alot of homes with filters connected to their water supply. I am not sure, nor ever asked, if that is the sameas an RO/DI unit. So if I am going to invest the money in setting one up, I have to lay down the gavel at my house and then beg for permission from the admiral. So in order to make sure I have a leg to stand on, I have to have all the advantage parts of it. Giving her the reason of "its for the good of the tank", might land me a bed in there with my shrimp.