Yes,
I'd have say the 20k radium's have more spectrums and with led's we run reefs are even bluer than that bulb, today.
I'm sorry if I took your question of 450 Royal Blues side ways in my post to yours.
It's a great question and tagging along.
~ Freddie
No problem my friend. I really want to know this as well. Kind of pity for that guy to tell another Reefer that running all blue is okay if it is not.
