Hi Jodi,
Save your money on the fixture. Go to Home Depot or Lowes and buy their 24" light fixture for $12.00. Go to www.petguys.com and buy the Repti-Glo 8.0 bulb for another $13.00 and you're done. If your cage is bigger than 24", get a larger fixture and bulb. No need to get specialized equipment that costs and arm and a leg. If you prefer the Reptisun to the Repti-glo, check petguys or www.lllreptile.com, they always run specials on them. I use all Repti-sun 8.0's on my cages in 48" sizes and they have worked very well and lasted the better part of a year.
Hope this helps.
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Raf
1.2 Jacksons Adults (Frank, Patty 2, Lucille)
1.1 Nosy Be's (Mars and Roja)
1.1 Bearded Dragons (Diego and Consuelo)
1.1 Adult Sulcattas (POOPIE and George)
0.0.2 Baby Sulcattas (frick and frack)
1.0 Home's Hingeback Tortoise (SPEEDY)
0.0.2 Red ear slider babies (Hingis, Dingis)
1.0 Yellow Footed Tortoise (Alfred)
1.0 Red Siberian Husky (Harley)
0.1 Black Lab (Krissy)
0.1 English Bulldog (Alice)
0.1 Blue Merle Great Dane (Wednesday)
Saltwater Fish and Inverts too