so sorry in a hurry while writing, was in class, the 400g i meant to say last week before march, the last weekend in February. in the 2nd week of march, so 2 weeks after first failed attempt i fed a live rat and it was hesitate but gobbled it down. it wasn't a big name breeder, he was selling rack more than anything, said it was a hold back and was in a 20 gallon tank, assuming 20L, i should of got more info, i feel really dumb, but excitement took over. that was my lesson learned, thinking of going and buying smaller tub, but didn't get to go out yesterday. do you think a smaller tub is needed??. on my 400g normal, i doubt it is stress, he has been in the same tub for 3 months. and seems fine