Round Conical Bottom Fiberglass Aquaculture Tanks

Conical-Bottom GRP Fish Tanks for Recirculating Aquaculture Systems (RAS)

Our conical-bottom GRP (Glass Reinforced Polyester) fish tanks are engineered specifically for Recirculating Aquaculture Systems (RAS) used in modern, closed-loop aquaculture facilities. The conical design delivers superior waste removal, efficient water circulation, and simplified bottom cleaning, making these tanks a critical solution for high-performance aquaculture operations.

Ideal for grow-out systems, broodstock tanks, hatcheries, and high-density RAS farms.

Advantages of the Conical Bottom Design

The conical bottom geometry allows solid waste and sediments to naturally collect at the lowest point of the tank, where they can be easily removed through the drain.

This design results in:

• More efficient automatic and manual bottom cleaning

• Improved water quality and oxygen stability

• Reduced organic load and ammonia buildup

• Healthier fish and lower feed and waste management costs

The conical bottom significantly reduces labor while improving overall system hygiene.

Aquatic-Safe, Hygienic Interior Surface

All conical-bottom tanks are finished with a special gelcoat coating on both interior and exterior surfaces, fully compatible with aquatic life.

Surface benefits include:

• Smooth, glossy interior that resists waste buildup

• Reduced bacterial adhesion and easier sanitation

• Optional anti-bacterial gelcoat upon request

• Long-term chemical and biological resistance

This hygienic surface supports consistent performance in continuous RAS operation.

Modular and Heavy-Duty Support Structure

The support system is designed based on tank size, load capacity, and site conditions, offering full flexibility:

• Support legs can be integrated into the tank body or supplied separately

• Legs manufactured from galvanized steel or fiberglass

• Custom leg heights available to match cone angle and drain slope

For additional durability, galvanized steel or plastic reinforcement pipes can be installed around the tank and coated with polyester and gelcoat to ensure full compatibility and corrosion resistance.

Project-Specific Manufacturing Flexibility

Our conical-bottom tank production is not limited to standard dimensions. As a composite mold manufacturer, we offer complete customization to match your RAS design.

Customization options include:

• Custom diameters, tank heights, and cone angles

• Special gelcoat types and color options

• Full compatibility with bottom drains, valves, inlets, and outlets

• Adaptation to project-specific hydraulic and technical requirements

Why Choose Our Conical-Bottom RAS Tanks?

• Designed specifically for high-efficiency RAS operations

• Superior waste collection and drainage

• Hygienic, aquatic-safe GRP construction

• Custom support and reinforcement options

• Long service life with low maintenance