xoparis, where did you find this, gotta link? I think this may finally be the answer for my 1.5....somebody had a nice little light they did some diy on a mounting for the other day but I lost the link, confound it.
And for the "shoulda got a 20g....", um, sometimes bigger is not always better. Shrimp/invert tanks....QT/hospital...many applications are better accomplished in a smaller volume. And not all of us have infinite space but still want/need multpile tanks.
That could be too much light if there aren't enough plants, but one 10 watt CFL bulb over 2.5 gallons should be fine. I wouldn't use a CFL over 15 watts, for sure!