i totally agree with FeatherDuster. coco worms are a bit of a challenge sometimes and it would be sad to not succeeded with one. Hawaiians are much cheaper and need similar care. see if a Hawaiians can do well in yor tank for some months and if so jump on a nice coco. i have two myself. one red/yellow and one pink/white.At that price I would do a test feather duster (regular hawiian) at first and see how well you are taking care at them. And to make sure none of your current live stock have a taste for feather dusters. Fish and inverts could make a nice snack out of them. I have had it happen before.