Watts of light with a 24" high tank?

[goldfish freak]

Hello I have a question concerning the needed amount of watts for a tank that measures 24" tall. How many watts of light would I need for a 120 gallon tank this tall if i want to grow low light plants such as java fern and anubias nana? Would 80 watts of NO fluorecent light be enough or do I need more? Thanks

[djlen]

For a tall tank such as the one you have, you should have more than 80 watts. The light, as I understand it, doesn't penetrate as well in a deeper tank. I would go with 2 watts per gallon for low light plants. Or at least 1 1/2 watts per gallon. Javas and Anubias will grow in low light conditions, but do better with more wattage. Not sure what you mean by "NO Flourescent" lights.
Len

[goldfish freak]

Thanks for the reply. By the way NO = Normal output.