Check for a daylight 6500K or 6700K Spiral CFL. I can't find them around me almost anywhere, but other people report the find them all over the place.
That is the 100W, depending on how far away from the light it is and if it shoots all the light straight down or half goes up through, say a lamp shade. You may not need it that bright.
Mine came from Ace hardware, and not all of the daylight ones are the same Kelvin / K
Also saw a plant grade light bulb a Walmart in their pet/ fish /aquarium bulbs.
And Zoo Med has one that is called Ultrasun.
daylight self ballasted compact fluorescent lamp
Ideal for all freshwater, marine, and reef tanks
Excellent color rendition for optimum viewing
Promotes photosynthetic processes in plants/marine algae
Fits standard medium base
All good for growing plants!