subject: Aquatic Plant Life [print this page] It is important when lighting your tank that you use fluorescent lights specifically made for aquariums. These lights produce the correct spectrum of light in order to encourage plant growth. Standard fluorescent lights won't do this, and will actually encourage the dreaded black algae to grow in your tank. Special aquatic lighting actually simulates daylight which is why they are so good for plant life. There are many different options available, including some great low cost energy efficient bulbs.