Wolf - The last link you provided is for a 24in fixture. You'll prob want a 30in fixture to fit on your 29gal tank. Granted the bulbs will still only be 24in, but the fixture would at least fit.
http://www.hagen.com/canada/english/aquatic/glo/index.cfm
^Info^
I can't say I've seen the Hagen Glo fixtures on the more common retailers (Drs F&S, petsolutions, big als) but I did find them here:
http://www.bigappleherp.com/AQUARIUM-SUPPLIES/Fluorescent-Lighting
I have them on 2 of my tanks, and I'm quite impressed with them already. I actually found mine at a LFS, and it was surprisingly cheaper than online pricing.
http://www.hagen.com/canada/english/aquatic/glo/index.cfm
^Info^
I can't say I've seen the Hagen Glo fixtures on the more common retailers (Drs F&S, petsolutions, big als) but I did find them here:
http://www.bigappleherp.com/AQUARIUM-SUPPLIES/Fluorescent-Lighting
I have them on 2 of my tanks, and I'm quite impressed with them already. I actually found mine at a LFS, and it was surprisingly cheaper than online pricing.

