jeremy ... i am setting up a 65 gallon with a 250 radium in the middle in a lumen max elite ... i was gonna run 2 36" t5s 1 ati blue plus and one geisemen actinic for dusk till dawn setting only... but i am now considering one of the 36" rb instead as my day and night light... would this be comparable to the t5s looks wise? brighter or less bright? my tank is 36x18x24..... will be in canopy with inside painted white .... heres a pic for an idea
The 36" RB is going to give you more light output than what the 2 x 39w (1 blue plus and 1 pure actinic) would give you. On top of that, you're probably going to get a little more fluorescence as well.
I would personally do the 2 x 50/50 and 1 x blue module. The all white module is pretty hard to set off, and I would recommend doing 2 x blue module for every single white module you use.