question about ebb and flow

starting a small grow no real xp. decided to start with hydro. i am researching ebb and flow and wondeing how the roots handle the light. are the roots exposed to light while they sit waiting for water?

no, from what i understand light is bad for the roots. you should place them in a medium in the ebb n flow system, i recommend rockwool (almost idiot proof), the medium will provide something for the roots to grow into, protect them from light, and give them access to h2o, nutes, and air.