10ppm is nowhere near through the roof. I personally wouldn't sweat it.
The short diatribe I have you though, is that small tanks are nowhere near as good at shedding nitrates as larger tanks. There simply isn't the surface area available to produce the bacterial cultures in sufficient volume to allow consumption to exceed production, short of having no fish in that tank.
One thing you can consider though is a chaeto fuge in a hang-on aquaclear filter lit by 9w PC's. The Coralife 2x9w PC fixture fits perfectly over top an Aquaclear 200 (I think I have the model# right, I'm not sure. One of the middle sized ones, not the really big one). It probably won't bring the NO3 right down to 0, but it would at least help with the reduction..
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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