Adapter Wattage Advice

[Marquiseo]

I need verification as to which adapter I should get for my reef brite fixture. I have (2) 24" Reefbrite XHO fixtures which both use a 60W adapter each. I want to combine both using a splitter and a single adapter. Would I use a 120W adapter to power both fixtures?

I know to some this may seem a elementary question but I am just trying to be sure.

 

[Reefing Madness]