bloods are cool snakes,,, im not sure if this goes for all,, but with mine it was like look at them one week and there small,,, look at them the next week and there giants.
i never power fed mine,, actually i kept their meals small because i was worried about getting them too fat. all i feed mine now is one XXXL rat once every 7 to 10 days, and sometimes ill skip a week. it seemed like after about year 3 they started really puting on size. BTW,,, looks ALOT better than the first pics.
spooky