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I mean its really a personal preference, you will be fine to grow softies with that light though. The nice thing about small tanks is it costs a lot less to fit them with a ton of wattage.
You can usually get whats called 50/50 bulbs that would work a little better. One half of the bulb is 10,000K the other is an Actinic. What kind of light fixture is this?
It could in theroy but if you host an open top as well as a fan it should keep it in check .
On all my tanks I run the heater , lights and fans on a rk2 however most just run their fan on timer with thier lights