I'm looking at getting a Biocube in the future, and it comes with a 10k CFL and a Actinic CFL. For a planted tank I don't think that a very good setup. Fortunately (for oceanic too, more $$$) Coralife makes CFL bulbs that fit the Biocubes in the 6700K range and the 10K range. What would be the best combo for a freshwater, densely planted tank? I was thinking I would just replace the Actinic, and run dual 10K and 6700K bulbs. But I have also heard it may be better to just run two 6700K bulbs. While I'm at it, if I decided to turn it into a reef tank, would dual Actinic and 10K bulbs be best, or dual Actinic and 50/50 (10K/Actinic), or dual 50/50 and 10K be best?