*For Smart APP Control, connect with the Mars Hydro iTime Dual-Plug Timer—recommended to pair the DWC with the iTime for scheduling and remote control, ensuring optimal oxygen levels for healthier plant growth automatically. Maximize Growth with the Premium Mars Hydro 4 Buckets 5-Gallon DWC Hydroponic System. This 5-gallon deep water culture kit includes a Pump, Air Stone, and Water Level Device - everything you need for vibrant, healthy vegetables and plants, indoors or out. Perfect for hydroponic beginners and experts alike.4 buckets DWC kit for 4 plants in a 100x100cm area. 4 buckets dwc hydroponics kit contains 4x 5-gallon PP plant buckets, 4x 8-inch grow baskets, 4x drip irrigation sets, 1x air pump, 12m of air tubing, 4x air stones, 4x packs of clay pebbles, 4x visual water level indicators, 8x valve connections, and 1x instruction booklets.