[JMaxwell]

Excellent, thanks again; this is really quite helpful. I think I'll have to wait for those DE Lumenbrights as I think the more focused reflector is appropriate for the dimensions. Hopefully, it won't be too long.

There is something else I haven't been able to figure out for sure and the nomenclature in various catalogs does not match up to what I read on RC. So...is this about right?

Actinic = 420 nm
Blue = 460 nm
Blue+ 440nm ?

So when you say Giesemann has lots of actinic, it looks like you are referring to the large peak on a Sanjay chart around 420 nm for that bulb. However, it could use some help in the 440-460nm range. Is this correct?

I don't have any need for a tank that looks particularly blue, so the Giesemann 14.5K lights would probably look great to me. Also, I run carbon, and I've never any yellow tinge to the water.

Thanks again for all your help.