Personally, I find bulbos quite a bit harder than many other orchids. However, I grow mainly catts and phals which can handle low RH and getting completely dry between waterings. Bulbos seem to be particularly resentful of getting thoroughly dried out. Keeping them at least lightly moist at all times appears to be more to their liking. If they didn't have such a rambling growth habit, I would try them in terraria with my micro-minis. Unfortunately, they would likely sprawl all over in a terr, consuming too much of the limited space.