Columbian sharks/silver tips/black fin shark catfish?

[Pufferpunk]

I need to know how to go about adding salt to their environment. I need specifics. No MacGuyver. No little'a'this/little'a'that. Can anyone help?

Here ya go: http://www.thepufferforum.com/forum/viewtopic.php?f=5&t=19348
Please remove all FW fish before you add salt. This includes corys. BTW, if & when your Columbians do try to eat those corys, the catfish will get stuck in the shark's mouth as their sharp fins lock open & both will die.

Nice to see you here, RTR!