drip system, how long drip durations?

hey guys, im piecing together my grow system right now, and im gonna go with a drip feed in DWC or with the tubing that wraps through the net pots..


my main question is-

in the mr.green videos, he says he does 3 feedings a day, all during the Lights On cycle...

so for how long is the dripper feeding the pots? ive been searching and cant seem to find an answer on the boards... and is there a recommendation as to maybe i shouldnt water 10min before the lights go out or whatnot?

ive got T44 and G13 already in rockwool about to sprout underneath my 75 watt flouro walmart grow light i just bought, haha...but i get paid next week and gonna get some T-5s from lowes for my veggin/mother/clones..and a HPS before i go into flowering..


the help is greatly appreciated...

any suggestions guys..i know alot is just trial and error..


so i know the rockwool shouldnt be dripping wet, but i dont want to risk havin it be too dried out before its next watering.

help guys!!

i have 1 gallon per hour drippers and still not sure how long to drip????

i use a similar setup a 5gal bucket dwc a 120 gal whisper pump a hydrofarm 4ft flex air diffuser a hydrofarm drip column and a topfin 120 gal airpump for the dripper i have four plants that take up the space of a 4x4 ebb n flo tray i feed 3 times with lights on for a half hour each feed. the rear plants are in veg about 4 weeks and the front 2 are about a week and a half in veg all from clones