I see you're in SD, so anything I can tell you should be taken with a grain of salt. Epis are a tropical that would be growing on tree branches in nature, with filtered sun, frequent rains, and pretty high humidity. In their habitat the only "food" would be decaying leaves, bird droppings and dead bugs...not heavy feeders. What you feed them would answer how much. I use a slow release that lasts 3 mo., but a liquid fertilizer would be applied more often...maybe once a month, during growth season, depending on how often it gets watered and what medium it's planted in. They do bloom better when crowded. I suspect that yours spend to much time indoors, and don't get enough light. They do need good light year round...even when not growing. All I can suggest is summer outdoors, and a south facing window during cold season. Fast draining medium, is essential. I live in the land of drought, so I water about once a week, depending on the size of the pot/basket, and they live outside year round. Microb lives in the land of 100+ " of rain so has to cover his to prevent drowning. It's all relative.
