Phals come very moist places. Temperature can vary from tropical to nearly frigid. Some places have monsoon followed by a dry season. They are most often found in forested areas and in the low light areas rather than out in the open. When orchids were first brought to England they believe that they had to be kept in steamed hot houses, its a wonder any survived. In actuality many orchids live in places that get rain nearly every day, but the orchids themselves live in the driest part of the rain forest...the trees. Orchid roots are designed to capture water from mist or dew as well as rain but up in the trees they don't sit in water and the roots are exposed to the air so they can dry fairly quickly.
Even some paphiopedilums can be found floating on peat moss in bogs. They are still in the driest part of the bog.
You can tell by looking at the orchid's pseudo bulb, how much water it needs. Paphs and Phals have virtually no psuedobulbs so they come from places that have fairly ample moisture. Besides, it is remarkable how long orchids can last without water. They are very good at preserving moisture.
Catleyas, grammatophyllums have larger psuedobulbs so they don't need to be watered as often and are often found in the crotches of trees but not on the ground. Quite a feat since grammatophyllums can get huge and weigh hundreds of pounds.
Cymbidiums and the oncidium alliance have fine roots and small psuedobulbs so they can store some water. Oncidiums are found in trees and on rocks but not in the ground. Cymbidiums are terrestrial, epiphytic and lithophytic. They are very tolerant of cold weather and actually do better in cooler climates.
Sometimes I find that the best media for me to use is no media at all. I just turn a small pot upside down in a larger one and tie the bare root orchid to the pot or basket. That way I can water every day without killing them. My best growing orchids are growing the outside of the pot and have their roots hanging out. Media actually is there basically to hold the plant in place. Different media and pots lose water at different rates. This can be an advantage or disadvantage, depending on how you water. My orchids are outside, in summer, they need water nearly every day. I would water less in summer if I had them in plastic and bark, but when the rainy season comes they will rot. Bark also breaks down much faster than rocks or no media at all. When bark breaks down it holds on to fungus and mold, impedes drainage and eventually rots the roots. That is why plants in bark need to be repotted before the media breaks down and why I can wait on the rock and no media plants a while longer.
https://www.ranwild.org/Phalaenopsis/mod ... nhead.html
Happy gardening in Hawaii. Gardens are where people grow.