I have had a lot of good luck with T5HO. There is a strip light that you can buy called SunBlaster and another one called Sun Blaze and both are very low cost. See the attached link (near the bottom of the page) to see the strip lights and a reflector that you can add to them for cheap. Plus there is a hanger that you can add reasonably too. The 24" version would put out a lot more light than a pc fixture and you can vary the colors as you see fit.
http://www.prairiereefsupplies.ca/index.php?id=95
This is just my 2 cents though.