After prowling the forums a bunch and trying to decide how to improve the lights on my Edge, I found a forum post by 600rr 6G Fluval Edge
I decided to do the same thing and make a more detailed log of how to make the light.
First I ordered 4 things from superbrightleds.com (cost ~$38):
NFLS-X3 (specifically NFLS-CW30X3) 6500k strip light, 50cm
12V DC Power supply 15watts
90 degree solderless NFLS-X3 connector x 2
NFLS-X3 compatible adapter cable with clamp
Of note, when ordering from this site, be sure that the accessories are for the specific strip that you are ordering, as there are multiple size strips.
I then cut the strip into 3 separate pieces, cutting off the wires that came stock
Attached the cut strips to make a U using the 90 degree connectors. Then connected the power supply with the ordered cable
(The strips have a + and - on them that must be continuous through the 90 degree connectors or they won't work)
I couldn't figure out a good way to cover the strip. I had made a couple trips to Lowe's and Home Depot before finding what would work well...an on-wall wiring metal channel. 1.9cm wide and 5 feet was $6. This I cut into sections to cover the light using a hack saw. I then spray-painted the sections black with flat black spraypaint.
The strip light then slid into these sections and I put it on the top of the tank and now the light spread is MUCH better. I'll take another picture in the dark as it's pretty bright in my office during the day.
(tank isn't really setup up right now...pardon the bubbles and mess)