Hi everyone. I have a 5.5 gallon freshwater tank with red cherry shrimp. I have 2 anubias and some java moss. I have been using the tiny LED light that came with my tank and they are doing good. I found this aquarium light in my garage and i want to know if it would improve my plants growth. The bulb says marineland natural daylight F15T8/18" 21k, and it also says Hg. The actual lighting fixture/hood says its a 17W . Is that too much light for my plants or could it kill them? I just bought water wisteria and a java fern. I put a root tab for the water wisteria and i added some seachem flourish. What i read somewhere is that too much light could burn/kill java fern? What about my other plants?