Vio, you are correct, it has 6 3.5k which I may change later on to more RB and UV but the spectrum is good enough for the price. The spectrum on that nova one is very nice too.
read this about low K
http://www.saltcorner.com/Articles/Showarticle.php?articleID=161
What Kelvin rating for Plants & Corals;
Here are some observations made by me and others in the professional aquarium maintenance community, some of these are simple observations, while others were based on more controlled tests. Please understand that these are still generalizations!
The Warm White (3500K) & Cool White (4200-5500K) are typical lighting kelvin ratings used in home lighting and is common of lights sold in hardware stores, etc.
While these sources were used years back for both planted and even reef lighting out of necessity (as there were not many options available), these are poor choices due to little essential PUR energy and many more cool white and especially warm white lights are required to delivery this light energy for photosynthetic life.
Sadly many LED manufacturers such as Evergrow, Ocean Revive, Maxspect, & even EcoTech include these kelvin rated emitters in their lights to achieve Photosynthetic Life PUR via a shotgun approach and/or more human pleasing colors.
If you are looking for the highest output in useful light energy for watt of energy consumed, these kelvin color lights/emitters should be avoided!
http://www.americanaquariumproducts.com/aquarium_lighting.html#led
http://www.americanaquariumproducts.com/aquarium_lighting.html#led