Long string floating around

Question
Hi,
I have a 150 gallon tank. in the past two days some kind of long stings floating around. I can't tell if it is coming off the live rock or if it is coming from the feather dusters. The live rock is about a year old, and still has some reds and purples in it. there are three feather dusters in the tank.

Answer
Debra,
If the stringy thing is attached to the live rock then it is most likly a type of filter feeding worm.  They are similiar to featherdusters and are not harmful.  If it's not attached to the rock and you don't want it in the aquarium any more... simply remove it.

Best of luck with your tank.

Regards,
Scott Johnson
Aquarium Crazy Fish
www.aquariumcrazyfish.com