Growrilla’s RDWC PRO 12 Pots (4 Rows) is a modular recirculating deep water culture system built around twelve 19‑liter double‑walled buckets and a central controller. The PRO line uses 50 mm push‑fit plumbing for high‑flow circulation, includes an inline filter, and features a float valve to connect an external top‑off tank (not included). This 4‑row layout has a 185 × 145 cm footprint with 50 cm plant spacing, and suits approximately 200 × 200 cm rooms. System water volume is 208 liters for stable EC and pH. Oxygenation is provided by a V60 air pump (60 L/min), while an EDEN 135 TB water pump circulates up to 2,000 L/h; total system power draw is about 55 W. Delivered ready to assemble with pumps, stones, and fittings.