chaeto growing in tight curls
 

I have some chaeto in my tank that has begun growing in tight spirals. Anyone seen this before? Its crazy looking! Why would it do that?

If anyone is interested I'll see about posting a picture.

a picture would help

mine has also done that in my smaller tank, totaly healthy but i just broke it up into a looser formation

it does this when it getts plenty of light, it does not need to grown long to reach the light