Actinic Lights

50/50 I'd say so... Check the link. :)
 
OK,
With a little searching I found out what thread you are talking about Bayoupr. The thread was moved to the proper forum because it dealt with lighting, which is a product. We are trying to keep all the related posts in the related forums so that threads do not get lost in the general forum. This makes it much easier for everyone with a little bit of organization.

To answer your question:
You will see a difference with each set up. The 50/50 bulbs are brighter than the combination of the two. You will definitely see a much bluer tank with a combo set up versus using 2 50/50's. If it were my tank, I would use a 50/50 and a 6500k daylight bulb being as this is going on a FW tank. The 50/50 bulb will simply be used for color enhancement.
 
Actinic did not look good on my freshwater set-up. I have seen them on salt tanks, and they look real nice.... In fresh, the actinic (blue) bulb washed out the colors.
 
First question would be, What are you planning on puting in the tank?

On my 55g FW tank, I had a 50/50 and a 6500k 4' bulbs. It was a little bright at first but nothing I would concider over done. I had live plants in the tank and the light was concidered minimal for the plants. I liked the look of the 2 bulbs.
 
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