Indoor plant problem, my chlorophytums are wilting!?

I echo what Steel Angel wrote. The way I water mine, which is outside on my balcony receiving morning sun and afternoon shade is to take the plant down and water it two or three times with about a five minute interval between each watering to make sure that the root ball is thoroughly wet. You can tell when it needs watering again by "hefting" the pot, and if it feels light, it's time for another watering. Also, make sure that it's not root-bound and that the water just flows through and doesn't permeate the root ball. Good luck with your spider plant.