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For freshwater planted you really should have the 6700's

This is directly off AHsupply's website

The Length column provides the approximate length of the bulb itself from the end of the glass tubes to the tip of the base pins. Note that the length of the 55w bulbs varies. For the combined length of a 13w bulb with its GX23 socket, add .5 inches. For the combined length of a 36-55w bulb with our moisture-resistant endcap add .6 inches. For the combined length of a 96w bulb with our moisture-resistant endcap, add .5 inches.

** Bulbs with a Color Temperature of 5500K through 7800K are appropriate for freshwater planted aquariums. There is no practical difference regarding plant growth, but there is an appearance difference. Bulbs around 5500K have a warmer daylight appearance similar to early morning light. Bulbs around 6700K have an appearance more like daylight in the middle of the afternoon under a clear blue sky. The 7800K bulb are just slightly bluer than the 6700K but maintain a balanced, daylight spectrum.

For marine aquariums, you'll want to mix 7800K or 10000K bulbs with Blue bulbs in a ratio of 1:1 or 2:1 or use the Combo bulbs which have one tube that is 10000K and the other tube dark blue actinic.

For Blue actinic bulbs we provide a description rather than a color temperature so you'll better understand what appearance to expect. Those bulbs called Bright/Medium Blue put out most of their light between 400nm and 500nm. Those called Dark/Deep Blue put out most of their light between 380nm and 450nm. Both have their primary spectral peak at around 420-430nm. Actinism is a property of radiation which, in the visible spectrum, has wavelengths between 380nm and 500nm.

General compact bulb info:

The Rated Life of a bulb, as supplied by the manufacturer, is an average of how long the bulb will light. About 2% light for 180% of the rated life, about 2% light for 20% of the rated life, though by far the vast majority fall close to the manufacturers' averages. The rated life of most tri-phosphor compact fluorescent bulbs is 8000 to 12000 hours. For an aquarium application, the effective life is usually about 12 to 14 months -- or longer if your total lighting is high relative to the needs of the species in your tank, especially for freshwater setups.

The Color Rendering Index (CRI) for all 5500K bulbs is 91-92. That's "excellent" in CRI talk. All other bulbs in the 6700K to 10000K range have a good CRI in the low 80's. A common Cool White fluorescent bulb usually has a CRI in the low 70's. That's considered "fair." CRI's below 70 are considered "poor." Note that CRI is irrelevant for marine setups when the aim is to simulate the appearance under many feet of water rather than to simulate the appearance of colors under full spectrum light. Blue actinic bulbs used on marine setups usually have a CRI in the 20's or 30's.

The difference between CRI 92 and CRI 84, for instance, doesn't mean that all colors are rendered with 8% less accuracy with CRI 84. It only means that certain colors that depend on the wavelengths that the CRI 84 bulb is lowest in will be rendered somewhat less accurately. It is likely that the CRI 84 bulb will supply all the wavelengths necessary to render all colors you are interested in very well. That's why a CRI in the 80's is considered "good."

A lumen is essentially a measurement of brightness to the human eye and is therefore very heavily weighted to the middle wavelengths of light that the human eye responds to most readily. As such, this measurement is not very helpful for aquarium applications since the middle wavelengths are the least important to aquarium inhabitants. To focus on lumens can be very misleading. For instance, the 55W 5500K bulb in the chart above has 4200 lumens while the 55W 6700K bulb has 4600 lumens. Yet these bulbs have the same total light output. The 6700K bulb simply has a little more of its output in the middle wavelengths.
 
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