It is obviously a necessity for you, possibly lighting, or room, either way rooting in 12/12 without correct humidity does not produce as good results- whatever you say! I have grown in doors for 2 decades, and tried everything under the son and the whole point of indoor growing is to try and manipulate conditions to as perfect an evironment as possible. Rooting clones in with an equal 12/12 photo period is far from ideal.