These plants have got a built in guide to watering !
Look at the roots, then soak the plant. The roots turn green, right ? When they are green they are full of water. Then as the plant dries out, the roots turn back to white, and just before they get there, you water again... easy- peasy.
Never mind whether you plant in rock or sphagnum or old socks - if you follow this guide for Phalaenopsis, you just can't go wrong
Incidentally here , where I live , in this hard water area, I can grow good phalaenopsis just by putting them under the kitchen cold tap every week, then draining well. No feed ! Never mind warming the water ( that bit is un-natural - rain water is always colder than the air before it rained, since the rain falls from a thousand or two feet up in the sky where it is that much colder. Never mind the chlorine - that is a mild disinfectant- won't do any harm.
You can fuss too much !
p.s. Want to get thoroughly confused ? Just ask a dozen orchid growers, "what is the best way." .. you will get 12 different answers. They are all right ( for them). You have to find out what is all right for you. Best of luck !