SO how many of each LEDS

[marlinmero]

well i think i decided to go with LEDS finally.i currently have a 48" light over my 72" tank. so im looking to add a foot of light to each side. im going to do 6leds on each side of the tek for now. and if its not enough ill add more. so with that said. i was wondering how many blues and how many whites should i get? thinking about useing rapidleds ultra premiums with the dimmable transformer

[theatrus]

There are numerous threads in the DIY section on builds, take a look there.

Most people do 50/50 on the cool white (XP-G preferred) and XR-E Royal Blue. Adding in some "normal" blue may improve you color rendition.

What is your current light? How high is it off the water?