Advice on grow lights?
I just relocated a good chunk of my orchid collection to a stand my husband built me as an Easter gift. The orchids are (I think) arranged based on lighting needs - Catts up top, phals down below, and are getting pretty good natural lighting (southeast exposure). I also just invested in a 4' T5 grow light, which comes on a stand (that obviously won't work with my set up).
My question is - how close to the orchids do I need to have the light in order for it to be effective? I bought it bc the Catts, while growing nicely, aren't blooming/re-blooming, but I don't want to fry my other orchids in the process. My vandas, which are hanging just above, have re-bloomed - so maybe I'm doing something else wrong?