I started pairing both of my females at 1100-1200g because they had nice heavy but not flabby body condition. The body condition is what you look for. Now, after being paired for 5 months, they're both pushing 1900g. Pairing them up does wonders for stimulating them to eat with enthusiasm. They are both about 18 months old and they're both showing promising signs of an approaching ovulation. Will I get eggs? Only time will tell...