I don't think you will be successful at growing plants, other than mosses, with a 15 watt fluorescent bulb on a 10 gallon tank. Two of those bulbs would let you grow low light plants successfully.
I have a 15 watt standard light fixture with glass top on my 15 gal. And I am having tons of success growing many types of plants within the tank. I have a 6500k daylight bulb. Choose your plants carefully, and you might be able to get some of them to grow.
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