With the HydroFarm GGWR09 9-inch halo water ring, you get more effective irrigation of all types of pots/containers in all growing mediums! Use the 3 removable stakes (included) to keep water rings secured around each plant, or use without the stakes if desired. This halo ring's durable construction allows for years of use, and can be easily cleaned between growing cycles. This water ring can be used with any set of 1/2-inch vinyl tubing, allowing you to create your own irrigation kit easily. The benefit of using this water ring, compared to standard drip emitters, are the perfectly positioned pores that evenly irrigate plant containers, eliminating possible dry pockets of growing medium.