Welcome to OT. First of all there is no hard and fast rule to growing orchids. We try as far as possible to replicate the conditions of the original home of the orchids we grow, with varying degrees of success. Most of the orchids we grow are from the tropics and so should not present too much of a problem for us living in the tropics.Maybe I'm not the best person (a notorious phal killer) to advise you on growing phals but those of my friends here grow some beautiful phals successfully. Your Barbados climate (except for the typhoons) should be ideal for phals. May I suggest you look up some posts by Angela, our fantastic grower from Barbados, and be inspired by her and her orchids?