Going to have 6 -10 plants on a drip system. My courtyard gets some pretty decent sun in Las Vegas but I have two trees which provide some shade. I already have a drip system in the house that I bought but want to modify to add to my own plants. I plan on putting them into each grow bag individually, but how many GPH should I use and how many times a day should I water? I heard 9 times, 3 in AM, afternoon and PM for 7 mins each time, but not the GPH was not specified. Thanks !