[Cynthia, Prescott, AZ]

Hi Gia and welcome. First, your method of watering will not work for bark. The water runs thru the bark in random fashion missing most of the bark. You need to take the plants to the sink and run copious amounts of water thru the pot until the bark is as wet as it can get. Tho every one else insists on presoaking the bark, I never did when I was using it, just made sure it was well soaked every time I watered. However, the bark should have been pressed into the pot very well so as to make good contact to the roots and to itself, assuring a bit of wicking thru the pot. If potted properly, you should be able to lift the pot by holding only onto the plant. After the thorough watering, drain the plant and just wait until the moisture in the pot (skewer method) reaches the right stage, then water at the sink again.

Dendrobiums tend to loose some leaves at this season. Generally, older bulbs have no leaves, and how many years they hold leaves depends on the particular Den's genetics. So you can expect a few leaves lost on all canes and maybe all the leaves on one cane. So don't worry about the Den. The bud loss may be an adjustment problem or your watering method may have been depriving the plant from the water it needed.

The Phal may be loosing the leaf from the adjustment period or it may just be time to loose a leaf or two. 6 leaves is quite a bit. I generally only have 3 or 4 (not a big Phal grower tho). The plant I currently have in bloom has only 2 leaves, tho very large ones. If your tap water is pretty cold, you can adjust the temperature before watering. Phals can be damaged by running very cold water on the leaves, which will result in collapsed tissue.

Humidity is usually not a problem once a plant has adjusted to your environment. I wouldn't worry too much about that, and if you like misting, fine, but only do it in the early part of the day so the leaves are dry by the time the temp starts to fall. 60F is fine for Phals and Dens.

The brightest indirect light is fine for the Phal, but I think you need to supplement the light for the Den. These are high light plants like Cattleyas and Vandas. Incandescent lights can be too hot, so check the temp of the Den leaves by feeling them. Luke warm or a little warmer is OK, but hot to the touch is not. Happy to answer any other questions.