took my sista's girl to see that nehmo movie last night, man those are some way kewl fishes, im gonna turn my 100 gal katfish tank into a saltwater nehmo tank, with sharks and everthang, i know i have made a few mistakes when i first started, but im asking FIRST this time, so do i need to drain my water or can i just add some salts to it ? i might get to go to the florida soon, i can get some sea shells and stuff fer decorashun, maybe even a couple 5 gallon wata bottles of fresh sea water!