A canopy goes over the top of a tank...
I know the fixture will support most corals, the more light demanding ones may have to be placed up higher in the tank though. As far as an anemone, I would highly suggest that you wait a bit for your tank to mature. It also needs to have pristine water and stable parameters. i don't believe for the first few months any tank is stable enough for such a delicate creature.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.