Tillandsia Xerographica loves the occasional misting, as well as being submerged at least once a month for fifteen minutes. It will be more bright and vibrant with a 15 minute soak once every other week. In the winter time you can soak less frequently, and in the summer time you can increase soakings, depending on your climate. If it is hot and dry where you live, then you should soak and mist more often, and if it is damp and overcast where you are, then you should soak it less often. Air conditioning and heating also tend to dry out plants a bit quicker, so you should alter misting and soaking accordingly.