Really nice tank you've got there
How many modules would you recommend for a 48x16x20 tank? I was thinking of going with 3 modules of Panorama Pros or 2 Kessil spotlights, but i'm unsure of the lightspread and intensity
I think 3 mounted with a 2-3 inch gap between would be fine. Have to raise it 7-10 inches above the water to get proper spread, though.