a couple things, can you find the packaging the tube came in? Depending on the Kelvin all you might get is the growth of algae. For now cut back on your photo period, to 8 hours. Floating plants like frogbit, duckweed, salvinia (I think it's salvinia not salvia!) or water lettuce. They soak up extra nutrients, basically trying to out compete the algae.
Get back to us when you find out about the light. If you have a low k light then you will want to replace it. For live plants 6500k is the ideal. Above that and it's not going to give them what they need, 10000k is for salt water reefs/corals.
6500k simulates natural day light and allows for the best growth of plants. I've seen fixtures that rate 2400k. They might keep an anubis alive, but really that low just gonna give you algae and nothing else.