WATERING QUESTION with HYDRO SYSTEM

Hi,

if any can help, i want to know if i use a pump and drip system to water my hydro sea of green/or indiviual plants, how long should the timer be set for and how many times a day.. i thoought
maybe 10-15mins 3times a day???

any facts on this greatly appreciated,

cheers Zelus

not sure bro-- i am interested in answer though because i want to set up something similar for a soil SOG grow..