Minimum required Wattage

[jeswin1.jose]

I am using two units of Maxspect MJ-L130 for my Tank (42 inch length and 48 inch depth). Will the light be be sufficient ?
Or do I need to add one more MJ-L 130 unit ?
One unit MJ-L130 as per spec is 30 Watt.

What should be the minimum wattage required for my tank size ?

 

[ReefStable]

I don't think the wattage .means as much these days tbh. It depends on the PAR it gives and the coverage.

If you're planning to do lower light coral, I think you're good. If you're looking for high end acros, I would probably add a 3rd light.

The par on these seems good, but to cover that much area with high par would require a higher hight and would lower the par. Which is why I would do a 3rd for SPS.