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ROTRON Regenerative Blowers for Hydroponics

Hydroponic systems grow plants in nutrient solution without soil, and root-zone dissolved oxygen is one of the limits on yield. Regenerative blowers commonly supply continuous air to nutrient reservoirs and deep-water-culture beds, feeding an entire facility from one unit through a distribution header rather than from dozens of small pumps.

Where air may be required

- Deep-water-culture beds and raft systems
- Nutrient reservoirs and mixing tanks
- Airlift devices circulating solution
- Degassing where CO2 accumulates in an enclosed room

What the blower does

The blower delivers air to diffusers or airlift devices, where it drives gas transfer into the nutrient solution. One properly sized blower is usually more efficient, quieter and more reliable than many small units, and the oil-free design means no lubricant enters a food crop.

Why selection matters

In deep-water culture, roots sit in solution and a few hours without air can cost a crop. Growers also expand incrementally, so a blower sized exactly for today’s bed count runs out of capacity quickly; discuss planned expansion at the point of selection. Blower heat is a real factor in sealed grow rooms, so intake air location should be planned rather than assumed. Air to Air heat exchangers are an option to help take heat out of the air leaving a blower.

Which ROTRON series should I consider?

DR covers most greenhouse and grow-system applications, with model size set by diffuser count and depth. Evaluate CP where humidity, nutrient salts or other corrosive conditions are significant.

Selection disclaimer

Final blower selection depends on required airflow, operating pressure or vacuum, electrical supply, site conditions, operating environment and system design. Not every facility or project uses a regenerative blower. When the requirement is uncertain, use Find Your Blower or speak with a specialist.

Building or bidding a complete aquatic project?

RotronStore makes it easy to purchase ROTRON blowers, parts and accessories. For complete aquatic equipment packages, estimating, submittals, procurement and project support, connect with Sivat Water Solutions.