Although the prescribed method for consistently breeding burms involves a slight cooling and reduced photoperiod, I have personally enjoyed success breeding burms w/out any manipulation of environmental factors. As long as the males/females are sexually mature, have good weight (but certainly not overweight), and are in otherwise good healthy, it is usually just a matter of pairing up the animals. But, if you want to increase your chances of success, a slight decrease in temps will certainly not hurt. Heck, I have had excellent success breeding many colubrids (bullsnakes, various kings/rats) w/out any seasonal temp fluctuations...perhaps cycling is not as important as we once thought.