Catts are best grown intermediate, even cool but you need to keep them dry during cold spell. Some like it quite warm like the C. dowiana. The trick is : you water them very well, wait until the roots dried out (70-75% within a few days) then water again. To bloom catts, you need very strong light short of burning their leaves. Personally, I think you might as well buy a bunch and experiment with them with the above guidelines. Learning by doing it, you will figure that out after a year or twos!