I grew all my orchids in full water culture and have great success.
I've noticed that, especially with phalaenopsis, the bloom lasted longer.
I always made sure to sterilized the roots with hydrogen peroxide, removed dead/diseased roots with sterilized tools, and apply listerine (original orange/brown colour) on the roots which acts as antifungul. Let it dry for a day, rinse and then start with semi water culture. I moved them to full water culture after a month or so later. Refer to Samantha's orchid on YouTube. I learn a lot from her.
