Those are some decent gains. My daughters 14 month old female spider is just over 1700 grams on 2/19, I got a normal female 2 julys ago ( 18 months) she was being starved. she was 749 grams, by the end of the first year I had her at 2700 grams, she breed for me and laid 9 good eggs. I also weigh her on 2/19 at 3960 grams. she is one of my snakes that when I open her tub, I pull it with a snake hook. she will come out as soon as it's open 18 to 24 inches mouth wide open head going side to side. I wish all my snakes had a feeding response like that. O, we named her Miss Piggy!