Growrilla’s RDWC PRO 3 Pots In Line is a recirculating deep water culture kit built around three 19‑liter double‑wall grow buckets and a controller. The PRO line uses 50 mm push‑fit plumbing to increase hydraulic flow; an inline filter and a built‑in float valve are standard for cleaner solution and easy connection to an external reservoir. Total system water volume is 60 liters; plant spacing is 50 cm with an overall footprint of 140 × 50 cm. The kit includes cylindrical porous air stones in each bucket, an air pump rated 20 L/min (≈1,200 L/h), and an EDEN 135 TB water pump with up to 2,000 L/h flow. Continuous operation draws about 46.5 W. Designed and manufactured in Italy.