I know feather dusters are filter feeders, but do they need to be fed? Or will they be fine on their own in the tank. I assume they can't eat the bigger particles that my fish are eating, but should I squirt some selcon in front of it, or should I get some coral/invert food? Also, will they attach on their own or should I epoxy them on? Will they tolerate high lighting or should I keep them lower in the tank? Thanks