I don't know what kind of light the hood takes (If it's LED its those little dots??) But you're right, LED will not be sufficient for plants, and in my experience, even "low light" plants. Everything died on me until I got a compact flourescent bulb with 6500 kelvin rating. I bought it at (what in the usa is called) Pj's Pets for 16.99 (gasps).
Some people here on the forum buy the same lights at home depot and similar stores for much cheaper.. This of course depends on the type of hood the tank has.
Your plants might also benefit some weekly fertilizers. For a couple plants like that I use SeaChem Flourish Comprehensive. It contain all the micro nutrients your plants need, my anubias used to grow a leaf every week and half but since I anchored it it stopped temporarily.