Outdoor to indoor growing question

[Bigdmvp03]

Hey my first grow , plants have been outside the entire time. Somewhere in mid to late flowering . 2 of my plants are about a week and a half ahead of the rest. But it is going to be raining all week and the temperatures are getting closer and closer to freezing outside . I have 2 Mars hydro sp300 lights for an up coming hydro grow. Should I bring them inside and use the lights instead? Or will that be harmfulness to the plants going from outdoor sunlight their entire life to a grow light?

 

[BigCube]

The light itself wont matter, it's more the amount of light. If you have enough light to maintain the 35w (actual watts) per square foot, you should do fine