I believe the problem with using driftwood collected from salt water is the retained salt. I leave my driftwood collected from the Gulf of Mexico outside to weather for six months, minimum. I want the rain and/or irrigation water to wash as much of the salt away as possible. But yes, mounted orchids need more frequent watering. I immerse my mounted ones (the mounts are a lot smaller than what you see posted) in a 5 gal. tub of 1/2 strength fertilizer solution every month, and leave them in the tub for 2-3 min. so that the plant, sphagnum/coconut fiber backing, and mount can really absorb the moisture well.
Thanks for the kind words. Ken
