Check the listing for details. Halo Water Ring Hydroponics Soil Drip Irrigation 4" 6" 8". Condition: New. Listed at 7.99 USD. These Halo Rings can be used with your current irrigation system to improve water distribution around your plants.Create your own flexible irrigation kits easily and cheaply with any ¼ inch tubing (⅙inch ID) and ¼ inch fittings (not included). Please note that adding ¼ inch ball valves may be necessary to create an even flow to all water rings in large installations.Features:The water ring has a 1 inch gap on one end to allow it to be placed around large plants without damaging the stalks. Uses 1/4in O.D(1/6in I.D) TubingMore effective irrigation of all types of pots/containers in all growing mediums.Drip emitters and stakes only provide a single point of irrigation making it hard for water/nutrient solution to evenly saturate a container.Can be used indoors or out in soil or hydroponics.Durable construction allows for years of use.Can be easily cleaned between growing cycles.Included:Choose between 3 different size water rings- 4in, 6in, 8in or choose a full set of all 3 size water rings