I control the system on and off , I hit them with different amounts depending on the weather and how much i've recently watered them and all that...on a heavy day I'm giving them about 35 gallons on a lighter day like 15? The emitter hose IS bad ass.. I do not have an injector on this garden. I haven't used anything but water but am about to hit them 1 time with 6 gallons of Age Old Grow in 2000 gallons of water. My water pH is good. The average last year got fucked up because I had 16 plants that essentially were failures last year. Never plant mother plants! I lost 1 individual last year.