Plant light question

Hello everyone, I am using a 7000K plant light (bought a fixture at walmart for $10) and love the way it looks. My fish and plants seem more vibrant than with any other light that I've used. I do have one concern though, it looks awfully dim, is this ok for the plants/fish. Should I add another light, I did have a regular fluorescent but using both together washed out the colors and the fish didn't seem to like it as much. BTW it is a 29 gallon with anacharis, Java fern, a banana plant with no leaves, a few strands of Java moss and a melon sword. I use Flourish Comprehensive 2x per week with no CO2.