E. tampensis is one of the first orchids I acquired. They grew in the oak trees when I lived in southern Florida.
I now grow mine in a sunroom in Chicago, IL. I have mine on a tree fern slab. In the summer I water two to three times a week, until the pseudobulbs swell on the new growths, and then I switch to winter watering of once per week. During the summer I fertilize once a week (weakly), and then once a month during the winter. I grow my plant in strong light (30% tinted windows) and the leaves are light green.