Do Roots REALLY grow in the dark?

Wow! Great information and loved the way you broke it down. Thanks again!
Informational on a level I can understand. Thanks
great read. great argument for running lights at 18/6. if they are going to actually grow with lights off why waste electricity. might get another timer for the veg room after reading this..
Good read and easy to understand.
solid info on a reasoning for 18/6 photo period in veg -