My experience is with Phlaenopsis which are happy in my east facing window. They are planted in wood chips and I water them once a week with tepid water which contains a very dilute amount of fertilizer. I use enough water so that it runs out of the bottom of the pot into a plastic shallow container that I then empty. I occasionally take them to the sink and wash off the plant and run water through the potting mix to remove any build up of fertilizer salts. I see nice plants just coming into bloom at the nurseries and super markets. Great plants if you can get them before they have been on display to long. I have them on a long table and have a sheet of plastic under them on the table which I wet with a spray bottle a couple of times a day to increase humidity. African Violets do well here also.
