dmolavi
Aquarium Advice Addict
Right now, I'm using "plain" IO salt, but am going to switch to their reef salt in anticipation of adding corals to my currently FOWLR tank. Obviously, I can't drain the tank and switch out all of the water at once, but what is the best way to spread out the change? Should I do 20% a day for a week, 20% a week for a month, or less than that, but spread out over a longer period of time?