I have a 6" T. blondi and a 3" G. pulchripes, and neither seem to be eating. The G. molted but has not taken food in about 3 weeks; the blondi has not molted but hasn't taken food in probably 5-6 weeks. Any reason why this might be happening? I'm using G. portentosa for feeding. Prior to these periods, both had readily taken them.