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400 L/H Water Pump. WATER MASTER is a compact and efficient submersible pump for indoor irrigation systems . With a flow rate of 400 L/h , a power consumption of 22 W , and a maximum pumping height of 80 cm , it is ideal for light watering and recirculation in grow tents and small tables.

The WATER MASTER 400 L/H Water Pump delivers water from the tank to the irrigation system with a stable flow and low energy consumption. The electrical unit operates at 230 V and 50 Hz , and its submersible design allows it to work inside the tank to minimize noise and suction losses.
The nominal flow rate of 400 liters/hour is ideal for seedbeds, return trays, micro-drip irrigation, and small hydroponic circuits where precision and regularity are sought.
The sealed housing protects the impeller and an intake grille helps contain coarse particles, promoting continuity of service.
Thanks to its compact size and secure attachment via suction cups, the pump fits easily into compact tanks, mixing buckets, or auxiliary tanks.
Maintenance is quick: open, rinse impeller and grid, reassemble and performance is restored.
A perfect support to keep nutrients moving, avoid stagnation, and water indoor crops evenly.
In small-scale indoor growing , consistent irrigation is key. The WATER MASTER 400 L/H water pump supplies short lines of drippers, diffusers, and irrigation rings with a moderate and controlled flow rate. Its 80 cm head compensates for common height differences between the reservoir and the growing table, maintaining sufficient circulation to mix nutrient solutions and ensure even moisture in light substrates. An excellent choice for propagation, early growth, and minimalist spaces where reliability is key without an oversized system.
It is used to pump and recirculate water from the reservoir to the irrigation pipe, feed micro-drip irrigation systems, operate a small spray lance, or circulate nutrient solution in compact hydroponic systems. With a power consumption of only 22 W , it allows for extended use with minimal energy impact. The flow rate of 400 L/h helps prevent salt buildup, improves oxygenation through water movement, and ensures a more uniform distribution of nutrients to the roots.
It integrates with standard irrigation accessories : main irrigation tubing, small distributors, low-flow pressure-compensating drippers, fine mesh inline filters, and non-return valves. Its submersible design allows for direct installation in standard indoor reservoirs, and its compatibility with timers enables the programming of short, frequent watering windows, tailored to the needs of seedlings, cuttings, or small potted plants.
The WATER MASTER 400 L/H Water Pump offers an attractive cost-performance ratio for compact projects: 22 W consumption, 80 cm lift and flow stability reduce assembly and operating costs in domestic and small-scale professional environments.
Hydroponics Blanes , a trusted grow shop and online store , offers discreet shipping throughout Spain and advice on flow rate calculation, filter selection, irrigation scheduling, and rigging. A leading grow shop in Spain, it boasts a complete catalog for indoor cultivation : pumps, irrigation accessories , reservoirs, lighting, and climate control.
Quick technical specifications: Flow rate: 400 L/h · Power: 22 W · Voltage: 230 V · Frequency: 50 Hz · Max. height: 80 cm · Submersible use · Suitable for micro-dripping and light recirculation in cabinets and small tables.
Those seeking efficiency and control in confined spaces will find the WATER MASTER 400 L/H Water Pump a reliable ally for moving nutrients, feeding drippers, and programming short, precise irrigation cycles.
A practical solution for regularly watering indoor crops , keeping the irrigation system tidy and functional, with the technical and logistical support of Hydroponics Blanes .
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