It sounds like you don't know much about cresteds yet. If your cresteds are not adults yet, i would recommend you separate
them in two 10 gal min. or 20 gal max. aquariums. Turn the aquariums up on end with paper towels as substrate with plenty of branches/vines/plants to hide in. Mist them twice a day(morning and evening) and keep temperatures between 68- 80 max...YOU DON'T WANT THEM ANY HOTTER THAN 80. While it is not a must, i recommend keeping a water dish in it.
Meanwhile, if you search through some of the new and older topics here, you will find a wealth of information, and feel free to ask specific questions. This forum is friendly to newbies and novices....like me
