Quote Originally Posted by elm0
no, not mixing salt until adding to tank
Forgive me if you already know this, but it still sounds like you plan to use salt water as top off water, which you don't want to do. Top off water is added to the tank to replace water that evaporates every day. Since salt doesn't evaporate, you only use fresh (preferrably RO/DI) water to replace the evaporation. If you put salt water in to replace evaporation, your salinity would continually creep up.

Again, sorry if I just misunderstood what you typed, but it sounded in two different posts like you were using salt water for top off.

*edited to say: Oops I just noticed that you've been a member here since 2004. I'm sure you know all about top off. Sorry for assuming ignorance on ya. Oh well, maybe a newbie will be helped by it.