I Grow under T5 lights i got two per shelf this year. But you should be fine growing catts under these! Im sure you know that already based on whats already posted. But Even one T5 Bloomed my B.little Stars last year so they are really strong Imo
But Even one T5 Bloomed my B.little Stars last year so they are really strong Imo
Hate to pop your bubble but my Little Stars bloomed under T8s for years, it doesn't require high light and isn't a good example of what Cattleya blooms under T5s.