Just thought I would pass this on to anyone that has snail growing tanks for feeding such things as puffers and loaches. After numerous experiments with spinach, lettace, peas and beans I have found that Ram's Horn snails absolutely love celery. I was cutting up some celery, dropped the top in the tank and it was gone except for a few strings the next day. I dropped another one in 1 hour ago and it is covered in snails.