Hi there FrogFriend I'm not an expert on FBT's.... But just a suggestion to you ... can you maybe elaborate on how your FBT's are living for example what the heat and humidity is, how often the water is changed and what they are eating and how long you have had them? I know lots of our little amphibian friends can stop eating for a number of reasons however I think if you could maybe give some more info others with FBT's might be able to help you better. I wish you the best of luck!