Originally Posted by
azfishgal
The salt I use (Tropic Marin) takes 1/2 cup per gallon, to make the salinity 1.025 (your salt should have instructions on how much). I mixed the water outside my tank in a 32 gallon trash can. Yes, it took a while to fill the tank, BUT if you have a bad batch of salt (and that has happened twice to me) it's easy to dump out and start over. After mixing a few batches of saltwater you might get a film around your trash can, I just took it outside and cleaned it with water and vinegar before starting again. This is why I wouldn't recommend mixing in your tank. I DON'T get a film of any kind in my DT after it's been mixed in my trash can. Now you won't have to wait 24 hours before adding it to your tank (since nothing is in it), just make sure it's mixed well, about 4-6 hours. Hope that made sense. Good luck!
Edit: Also, it's a good idea to fill your tank with regular tap water and run it for 24 hours to check for leaks. Then empty and start filling with saltwater.
So letting the saltwater age while I get my equipment will not make any more of a difference than letting it age for 24 hours?