Exactly.The one from Home Depot?
I am using two to illuminate two kitty litter buckets filled with Ulva. Heads up though on possible trace element depletion. I have to dose Chaeto Gro or else the Ulva peters out. Right now, the Ulva is doubling in size every week (1.5 liters becomes 3 liters). Lights are about 4-6 inches above the water surface and on 12 hours per day. You’ll have to figure out how much Cheato likes though.
I haven’t entered this design into any beauty contests yet. You will be able to glean some algae growing parameters. Points of interest in first photoPics?