Success with these guys is limited. A lot will depend on the type of tank and available natural nutrient as well as what can be fed. They are filter feeders and need both meaty and vegetable type foods as well as bacteria. If your tank is heavily fed/fish populated, it may do OK. If a cleaner system that is heavily exported, I would leave this one be. They are generally short lived in most cases.
LeslieH might be able to offer you some additional insights.