Originally Posted by
earlybird
http:///forum/post/2510744
Can you still run actinics with T5's? How true is the statement that they run cooler than PC bulbs?
Yes, they do make pure actinic T5 bulbs. IMO VHO actinics have a more purplish hue whereas the T5 are more blue.
I have not used PC, only VHO and T5 so I cannot say that they run cooler. T5 do generate heat and don't run cool to the touch at all, but IME are cooler than VHO.
The Aquactinics fixtures are designed so that they can sit right on top of the tank without any heat transfer. My TX5 sits about 2" or so off of the water because of my canopy design, but I can't feel any heat radiating from the bottom of the fixture at all.
-Justin