I bought a feather duster about a week ago, and have been tryin to place him in my aquarium. I've tried burying him in the sand, then tried putting him between two small rocks and he just keeps pushing himself out of where I place him so that his whole body is just laying flat on the sand. I'm under the understanding that the bottom part of them should attach to something, and from the research I've done people just seem to put them in the sand and they stay and are happy, what am I doing wrong?
Here's a pic of the feather duster..
Here's a pic of the feather duster..