Two Ai Prime 16HDs or only one?

[Blvck.xvii]

Hey guys! I’m back with a question about lighting, so I have a Ai prime 16 had on my 20 gallon panoramic tank. As I feel like I second guessing that it’s not enough for the whole tank to be fully covered? Should I get a another one? Or stay with the one I have.

 

[intricate_reefer]

Two, it’s going to be hard to get coverage with one on the right side

 

[Pistondog]

What are the plans for the tank, coral wise?
Can you place light hungry corals near the top?
Just set up a 20, 24x13x16 with 1 prime 16.
Cheating the light to one side for sps, other side will be lower light corals.

Can always add it later, if you've filled up the high par areas.