T5 for mixed reef-how many watts?

[fkshiu]

I've got the 4x39W Teklight above my 46 gallon bow (very similar dimensions as a 50 gallon).

I've got mainly LPS and some softies including orange ricordia. Nothing super light demanding, but everything's growing very well with excellent colour.

To get the most bang without too much yellow, stick with the German-made Giesemann bulbs. I've got a Blue+ and three Aquablues.