Hi bro,
Thanks for the compliment.. !
For the number of LEDs needs can be calculated by the formula of tank length x wide / 16.
Regards to LED colour ratio of my design, it's derived from the Ecotech Radion and add in some of my thought that come from my past experience . As I'm looking for 14~20KK so my ratio is either 2.5RB:1W or 3RB:1W but the about design is not confirm yet .
For colour temperature ratio, you also can refer to ReefLedLight.com .