http://www.specialty-lights.com/531065.html

http://innovativelights.com/80wat5buhou.html

The Giesemann True Actinic 80 is what I run on my tank. I have two 80W and two 54W True Actinics.

34.95 a piece at Specialty-Lights

29.99 a piece at Innovative Lights

I've dealt with both and they are great dealers.