I water most of my phals once a week, but they take about that long to dry fully, mainly because I drench when I water. They grow great that way and I don't have problems with rot.
I find if they don't dry in a week I start worrying about rot, 10 days at the outside. In which case I take steps to get a medium that dries quicker or put more holes in the side. At 7 days or less to dry they do well, at 14 days to dry they seem to struggle with root problems.
Just my
---------- Post added at 10:28 AM ---------- Previous post was at 10:19 AM ----------
I've noticed something in your pictures James... you are growing in moss there... In moss (mostly non-phals for me) I water lightly just enough to wet the roots, just as you have suggested. You will still moiten the moss doing that, you can't avoid it, and it holds that moisture for a little while (how long depends on many things, including climate of course).
In bark, much of the bark I use holds no water at all if I just run water through to wet the roots. Some new bark I have wets really quickly (similar to Orchiata but not that), I've not used it on phals yet but on other plants I've started watering by running through enough to just wet it, it then dries about like I expect from moss doing the same. On my older bark that just doesn't give enough water and it has to be soaked or the plants start dehydrating or need watering more often.
I try and aim my potting medium mix to allow my weekly watering. It doesn't always work, but that's what I aim for. I really like this new bark because it's wetting so easily so needs less water over all to achieve that.
I DO agree though that phals when healthy cope quite well dry, in the summer with weekly watering mine are probably dry a couple of days at least before I water again. However with already struggling phals I've found they improve quicker if they get a little water often, it's only a couple of struggling ones at the moment that I water every few days.
I find that interesting and haven't consciously noted what I'm doing until thinking about it now. I soak if the type of medium/bark needs it, I run water through if the medium takes up water quickly because I don't want those mediums to become too sodden (as moss and this new bark I have would).
This can be the danger giving advice, experience means we automatically adjust what we do based on past experience, novices might stick to the advice not knowing how to adjust
I will try and be more careful of that in future, thanks James