I would start with one of these.
Zoanthids
Polyps
Mushrooms
But with T-5 / MH lighting, I would go for some LPS / SPS corals, maybe when you get some more experience.
Zoanthids
Polyps
Mushrooms
But with T-5 / MH lighting, I would go for some LPS / SPS corals, maybe when you get some more experience.