Ive seen indoor set ups that incorporate the suns light for a few hours each day.....If your going to be moving your plants inside and outside everyday i would first make sure the conditions such as humidity and temp. Jumping around from and 80 degree room to 65 and then back everyday or from 50% humidity to 10% and back everyday stresses plants...but a few hours of natural sunlight during the mid afternoon is a technique ive heard more than once