Orchid, Cattleya Drumbeat 'Heritage'

I have owned this orchid for about 25 years. I ordered it from a mail order Orchid catalog in Hawaii. I have been told that this is a ver...Read Morey old Cultivar and is now quite scarce. This has generally bloomed around Christmas when I grew it in a South-West window. It has been growing under plant lights for the past 4-1/2 years, and during this time it has bloomed in June and August. I have found that it is very important not to overwater. I occasionally use Peter's "Professional" Orchid Plant Food 30-10-10. Although I do not think it is necessary, I have alway kept this plant on a pebble tray. The plant's pot sits in a glass pie plate to keep it from being in contact with the moist pea-pebbles. I also occasionally mist, but not often.