I would possibly ditch the 50/50.. they are mostly for reef tanks with the actinic tube (one 10,000k "U" and one blue actinic "U"), for plants you'd be better off with just a 2nd spiral bulb, try for some 6500k ones, they have a 'brighter' light IMHO. I am building a 10 gallon also and am going to use this same setup.
Designed for use where space is limited but powerful lighting is desired.
A single ten watt Mini Compact Fluorescent gives the same output as a 50 watt incandescent bulb.
Self-ballasted, low operating temperature bulb fits a standard medium base.
High-intensity output 50% 10,000K daylight and 50% actinic 03 blue light enhances fresh and saltwater aquariums.
Caution: When used on saltwater tanks, ensure that tank is covered. Use in 120V 60Hz grounded circuits only. Always handle bulb by the plastic base when removing or installing.
Made in China.