that Fish Guy
Frag Swap Crusader!
You add it in a mixing bucket and aerate, so that the carbon dioxide gets removed from the water. That way the fresh saltwater will have the same pH as any other saltwater with the same alkalinity would have. Muriatic acid leaves no residue that would lower your tank pH after aeration...
Any Acid (Like Vodka)
I will never add to my tank.
I am overly paranoid maybe but I will not do it