One thing that is important for care of FBT is to be sure you have a temperature change of about 10 degrees from day/night. You can do this a number of ways, but the easiest is to have a heater in the water set to 72 degrees, and then turn off the heater at night so that the temperature falls to 62 degrees (guess it depends on how warm/cold you keep your house - mine is freezing!). Having natural daylight (via daylight bulbs) along with the temp difference and your frogs will be lively and this will stimulate appetite. Any time your toads won't eat, or seem "depressed" it might be because you do not have this temp change. Our herpetologist suggested this fix for our FBT and it worked wonders. I've since added heat to our salamander tank and we see great changes with him too.