I recently was given a marbled crayfish for free from Petsmart. I moved it from the 1 gallon bowl they had it in to a 30 gallon long that was already established. In my experience crayfish usually molt every few months. Why has she molted 3 times in the 3 weeks I've had her???? tank parameters are 7.5 pH, 0 ppm Ammonia, 0 ppm Nitrites, and 5 ppm Nitrates. Temp is 79 F. She is stocked with 6 mollies. Why is she growing so fast? I feed her omega one shrimp and lobster pellets, fresh produce, she also gets frozen blood worms and brine shrimp, and whatever flake food the mollies don't eat. She is constantly scrounging around for food.