I bought a 55w compact flourescent light from ahsupply.com and retrofit it into the old plastic hood from my previous 30w light and it seems to work fine over my 29g. I have planted mostly crypts, but some hornwort & java fern as well.
I set it up based on information gathered from this forum and from Mrs. Walstad's book and it's been successful & quite pleasing to me. It's been up for about a month & a half and I rarely do anything besides top it off with water. Plants & fish are happy & healthy.