I obtained a group of six Fire Salamanders and two of the females looked ready to pop. I put the biggest one in a small tank w/ water and a rock. She dropped one larvae. After 4 days there were no more. I have been rotating the bigger females through the tank and no more. On a good note it has been more than 3 weeks and the little guy is huge maybe 7 centimeters. what should I do for it in preparation for morphing?