hydro for the first time indoor

i am using the ebb and flow system. A 3x3 table and a 4x8 table .
so i got a couple questions do to this is how i learn... I am using pink/red clay pellets as the medium. i am using foxfarm feeding schedule..

The only thing i just don't have no clue is how many times when the ligths are on do i fill and drain the tables ??and when there sleeping i am guessing that they arent going to take on much water i think .. i was thinking about filling the tables up once every hour for 15min ...and when ligths are off ill feed 3 times only so about every 3.5 hours when ligths off...

WELL THANKS PEEPS.....

Are the hydro rocks the only medium? If so I would try to do 1/2 hour every 3 hours when lights on and do 2 30 minute cycles when lights are out and adjust accordingly.
Adieu

:rastasmoke: hey thanks for reposting blue bear ..ya a friend of mine that grows 2.. toll me he runs the punp for 15 min every 4hours when ligths r on ..and in the middle of there sleeping time only once for 15min its seems pretty close and compatible to what you suggested..sorry about my spelling.. :jointsmile: anyways the idea is i need massive yield's for harvest time and i have witness with my eyes the power of hydro!!!!plus i hate soil ewwww exept when grown out in the wilderness..:stoned: . so anyone that wants to help with these different pump and drains of the ebb and flow i ask for any help thank you all..highweedskunk!!!:rasta: