Okay, this might seem very silly but I just mixed up almost 20 gal of rodi water with salt a couple hours ago. On the way of wheeling it to my office to do a water change, I see a penny in the bottom of the can. The can has had water in it for a couple weeks, holding for the next water change. Salt went in today, though there could have been some residue salt water left over.
I have no idea how it got there or for how long. Can I use this water or should I dump it.
I have no idea how it got there or for how long. Can I use this water or should I dump it.