Cannot get my chaeto to grow for the life of me!

[joe pooh]

i got a small ball of it months ago and have it in the back of the main tank. it does not grow or die. i do need more lights. right now they are over the middle of the tank where i have a few frags, but when the fish swim closer to the glass you can tell the lights are not hitting them any more. once i get more lights i will make a stronger effort to grow the chaeto ball. i am just glad it is not dying.