So I picked up 2 columbian sharks yesterday,I know they do best in groups so Ill proabably pick up one or two more today. But I was wondering what temperature should they be kept at or optimally growth rate. And also at what point should I begin the brackish trasition cycle? They are proably 1.5 in right now, so at what size? Also when should I do the full marine trasition? Lastly, when i am making the brackish water I assume I can just use regualr aquarium salt, correct me if im wrong, but if so, at what point would I have to switch to the marine salt blend (the ones that come in a bucket). Just out of curiousity what would be the effects if i satarted takeing them to brackish right now? I have heard they dont go into brackish until they are around 4 in but thats kinda what im asking. Thanks And I have a bunch of very big tanks so dont worry about that, whatever they need they will be taken care of. From what I have seen they only get 13in ish?? right?