Wow, thanks for all the great ideas! I've always watered all my orchids for at least a minute, somewhere I read about orchids needing deep watering? So it's okay to just water until you see it coming out of the drainage holes?
I only do this with high-quality water (collected rain only in my case, but you could use distilled, de-ionized, or reverse osmosis water). Minimal or no fertilizer is important too.