Dont be adding saltwater to top off your tank. Unless you are doing 1 gallon water changes there is no need to add salt for top offs.Wow, these are some really great stories! I am still new to the SW, about 2 1/2 months so nothing major. I usually buy one gallon jugs of distilled water since I have a 12g and just dump a little out and add salt to the jug. I figured I would get a glass of water before I added salt to one jug. Yeah, you guessed it, picked the wrong jug, got a nice big gulp of iced salt water....first time I have ever spit water all over the place.
btw my salinity lessens as the water evaps.