If this is in the wrong forum please move.
I am going out of town for 3 weeks and my current water sprinkling system doesn't cover all of my plants and only dampens the soil instead of giving a deep watering. My question is, is there a fast and cheap way to make a sprinkler system that will cover all my plants? I have a container garden that sits a top two shelves so they are not directly on the ground (issues with ants and slugs). I was thinking of attaching the water hose to a timer and using PVC with holes to place over the containers. Has anyone used this way or have suggestions of other types of cheap and fast systems?