Awesome moon lights. I have had one of the 3 foot actinic for awhile now. No it will not shine through a t5 bulb. It's strictly moon lights only, but very bright and the corals glow very nicely. If you want to see pics check out my 46gallon back up and running thread. And for that price is awesome! I paid 90 for my 3 foot when it was on sale!