Since 2012, Flexi Tanks NZ has been New Zealand's leading provider of flexible bladder tanks, supplying and installing over 800 units for farmers nationwide. Designed and manufactured in France by Labaronne-Citaf, the inventor of flexible storage and leading the way for 67 years. Our Flexi Tanks offer an innovative, council-compliant, and cost-effective solution for storing dairy effluent, wastewater, leachates, and other liquids. Built to exceed rigorous New Zealand standards and withstand harsh local conditions, they deliver a reliable, long-term on-farm solution.

With all forms of effluent storage, effective solids management is essential. Flexi Tanks are equipped with more mixing valves than any other option on the market. They are the only tanks that feature both side and dedicated top mixing ports for optimal solids management.

Need to Store Dairy Effluent?

Flexi Tanks are suitable for dairy farms that require Dairy Effluent storage from 100,000 litres of storge for small farms through to 2.55 Million litres of dairy effluent storage for medium to large farms.

Proper effluent storage is essential during periods when irrigation or spreading is restricted, such as wet weather or regulatory limits. Flexi Tanks offer a flexible, safe & enclosed system ready store, and manage effluent, helping manage your effluent ready for its reuse as a nutrient-rich fertilizer.

Simply connect a Flexi Tank to your existing effluent pond or irrigation sump to store effluent when irrigation isn't feasible (e.g., during rain or restricted periods).

Contact us today for advice on DairyNZ effluent calculations and regional council regulations. We can also connect you with a team of independent industry experts.

Superior Mixing for Effluent Management

Flexi Tanks NZ offers advanced mixing capabilities to ensure optimal effluent management. With more mixing valves and ports than any other bladder tank on the market, our tanks provide unmatched flexibility. For instance, a 500,000L Flexi Tank includes 8 side mixing valves and 11 of our latest top mixing ports, allowing easy agitation of contents using an effluent-spec pump from any point in the tank. Regular mixing is essential for effective effluent management, and here’s why:

• Reduces Solids and Sludge Buildup: Prevents accumulation for consistent tank performance.

• Prevents Crusting: Stops floating matter from forming a crust, ensuring smooth operation.

• Enhances Nutrient Distribution: Delivers uniform nutrient application during irrigation.

• Maintains Tank Capacity: Avoids capacity loss due to excessive buildup and loss of usable volume.

Keeps Effluent as a Slurry: Maintains a consistent, manageable slurry for easy handling.

Combine our Flexi Tank plus our V-Force system for a reliable, efficient solution for superior effluent mixing and solids management

Click here  to learn more about mixing your Flexi Tank.

Key Benefits of Flexi Tanks for Effluent Storage

Flexi Tanks stand out as a reliable, durable, and user-friendly option. Here are the main advantages:

• Mixing ports: Side and our latest dedicated top mixing ports, is the latest in mixing technology with to give the most access for stirring your Flexi Tank to help manage solids and sludge preventing build up. 

• Optional V-Force system: Our premium feature to further advance your solids and sludge management capabilities, click here for more information about our V-Force system 

• UV Stabilized: Our Enviro+ Effluent storage and Water storage are UV treated to provide a long-lasting solution in harsh NZ conditions. 

• High Rainfall Suited: Enclosed system is perfect for high rainfall areas, preventing rainfall from entering your tank means less cost overall and smaller required storage. 

• Enviro+ Material: Multi-layered rip-stop fabric designed specifically to be used for Dairy Effluent our fabric is independently tested and certified by KIWA, certified for effluent compatibility, ensuring compliance with New Zealand council compliance and regulations

• Cost-Effective: Pricing from $16,500 +GST (100m3), affordable tanks and easy site preparation keep costs low, Flexi Tanks are a depreciable asset at 25% and can be relocated (for sizes under 500m³).

• Earthquake & Wind resistant: Flexible design allows for absorption of movement during earthquakes and low-profile design is ideal for extreme winds.

• Safety and Compliance: Fully enclosed system eliminates drowning risks for people or animals—OSH compliant with no mandatory fencing required. Proven storage solution for farmers across NZ.

• Flexibility and Convenience: Available in various sizes to match your needs. Rapid deployment (2-4 hours) with minimal site preparation. Can be rolled up and reused elsewhere.

• Nutrient Preservation: Maintains effluent quality for reuse as liquid fertilizer, leading to better pasture yields and reduced drought impacts.

• Peace of Mind: Proven track record with over 800 tanks nationwide, used by big-name companies in dairy, horticulture, and construction.

• Gas Ventilation: Strategically places gas vents to relieve pressure of built-up gasses while keeping rainwater out. Also, future proofed for gas harnessing if required in rule changes 

Click here to read more on our innovation and performance