Just the 2! The short 1 will have 5 distribution drippers to water a ring around the outside of the pot and the long 1 will be closer to the plant measuring the soil down deep and usually not til plant has some size and is drinking a bunch will it open up and drip closer to the root mass to help the pot stay moist evenly throughout! If it’s not enough in my opinion I can add extra of the small carrots later but the guy I talked to from sustainable village said I don’t need more! I was gonna buy more drippers to go on the long carrot and he said this was plenty! I’m guessing if I was willing to spend more money and he said this was good I’m guessing it’ll be enough!