ok so basicly i did some research after finding out how much i realy wanted to get a snake prefferably a ball python female seeing as a friend has a male and would want to breed in the future. so i went out and bought about a 2 foot female and moved it into my temporary 20 gallon tank (a friend said hed help build a tank but found out he cant till tommarrow). at the store the snake didnt seem to active and it seemed all of them (there were 3 in the cage all approximatly the same size) were a bit in the biting mood. the lady assured me she had just fed them yesterday (sunday) and they were about to shed witch i can tell because the eyes on the female i looked at and bought were blue. but basicly my question is should one heat lamp be enough to heat a 6ft by 29in tank or should i invest in buying two? my basic desing would be this... http://www.arbreptiles.com/cages/tips.shtml ...a little over half way down on the right side the white cage