Biofloc Fish Tanks
Round framed tanks where welded liner integrity, bottom drainage, regular cleaning and practical relocation can matter more than decorative appearance.
Aquaculture containment · custom project supply
Aquaculture Tank Tarpaulin for Biofloc, RAS, Fish & Shrimp Farming
DERFLEX manufactures PVC coated polyester aquaculture tank tarpaulin for framed fish tanks, shrimp farming tanks, biofloc systems, nursery tanks and related water-containment projects. Material structure, finished dimensions, seam layout, outlets and attachment details can be reviewed around the actual tank design rather than treated as one generic tarp specification.
Available for buyers sourcing custom aquaculture tank tarpaulin, fabricated liners, roll material and repeat B2B programs. Final material and compliance requirements should be confirmed against water chemistry, species, operating temperature, installation method and destination-market requirements.
DERFLEX product referencePVC coated tarpaulin + aquaculture application
Custom fabrication
Project-based specification
Project-based specification
Selection principle
An Aquaculture Tank Is a Containment System — Not Just a Sheet of PVC
A waterproof aquaculture tank tarpaulin performs as part of a system. The coated fabric must retain water, but long-term reliability also depends on the supporting frame, welded seams, the prepared base, top-edge retention and every inlet, outlet or bottom drain that penetrates the liner.
That is why a useful quotation begins with tank geometry and operating conditions. Specifying only color, GSM or thickness can leave critical failure points unresolved.
For commercial tanks, ask the supplier to review the complete load path: fabric → weld → fitting → frame → substrate. A strong fabric cannot compensate for a sharp frame edge or poorly detailed drain flange.
01
Coated Fabric
High-tenacity polyester reinforcement carries tensile and tear loads while PVC coating forms the flexible water barrier.
02
Welded Seam Layout
Panel direction, overlap, weld width and process control affect leak resistance and repeatability across large fabricated liners.
03
Frame & Edge Interface
The liner should sit against a smooth, compatible support system without concentrated loading at brackets, bolts or unsupported edges.
04
Drain & Pipe Details
Bottom drains, overflows and side penetrations require sealing and reinforcement details matched to the liner and hardware.
05
Water & Cleaning Chemistry
Disinfectants, treatments, salinity, temperature and cleaning procedures should be declared before final material selection.
Where it fits
One Material Platform, Different Aquaculture Operating Conditions
The same nominal tank size can require different material and fabrication decisions depending on whether it is a seasonal nursery tank, an outdoor biofloc unit or a repeatedly cleaned RAS holding tank.
RAS Nursery & Holding Tanks
Flexible containment for recirculating systems, hatcheries and temporary holding where ports, drains and repeated wash-down should be planned into fabrication.
Shrimp Farming Tanks
Custom tank liners for controlled shrimp culture, trial farms and modular production layouts using smooth, cleanable coated surfaces.
Fingerling & Quarantine Tanks
Smaller tanks and temporary containment programs where portability, quick installation and controlled isolation are operational priorities.
Commercial Grow-Out Tanks
Heavy duty aquaculture tank tarpaulin can be evaluated for larger outdoor units with greater handling, UV exposure and hydrostatic loading.
Aquaculture Equipment Programs
For tank builders, system integrators and distributors that need repeat dimensions, color control, liner fabrication or roll material for local conversion.
Material architecture
Reinforced PVC Construction for Flexible Tank Fabrication
DERFLEX aquaculture tank tarpaulin is based on a woven polyester reinforcement coated with PVC. The textile core contributes dimensional stability and mechanical strength, while the coated faces provide the waterproof surface and support compatible heat-welding methods used to convert roll goods into large liners.
Formulation can be discussed around flexibility, outdoor exposure, color, surface finish and other project-specific functions. For fish-contact, food-contact or other regulated applications, state the exact document or standard required before production; a general industrial PVC formulation should not automatically be treated as certified for every use.
PVC functional coating — water barrier / surface protection
High-tenacity polyester base fabric — reinforcement layer
PVC back coating — encapsulation / welding surface
Material-side control matters.
Reinforcement, coating, surface quality and weldability should be consistent with the final tank fabrication method.
Reference technical data
A Starting Specification — Not a One-Size-Fits-All Requirement
The table below reflects an existing DERFLEX PVC coated tarpaulin construction used for biofloc / aquaculture water-tank applications. Final values should be confirmed in the sales specification for each order.
| Property | Reference Value | Test / Procurement Note |
|---|---|---|
| Base fabric | 1000D × 1000D polyester | Other reinforced structures can be reviewed for different tank duties. |
| Construction | 20 × 20 threads / inch2 | Reference aquaculture-tarpaulin construction. |
| Total weight | 650 g/m2 | DIN 53352 listed on the DERFLEX reference product page. |
| Breaking strength | L 2300 / W 2100 N per 5 cm | DIN 53354 reference. |
| Tearing strength | L 350 / W 300 N per 5 cm | DIN 53356 reference as listed for the existing construction. |
| Adhesion | 80 N per 5 cm | DIN 53357 reference. |
| Color fastness | ≥ 7–8 grade | Relevant when appearance and outdoor exposure are part of the purchase specification. |
| Reference temperature range | -30°C to +70°C | Project minimum / maximum temperature should still be stated before order confirmation. |
| Fabrication | Heat-weldable PVC coated structure | Seam design and settings depend on geometry, equipment and final material grade. |
| Color / dimensions | Custom project options | Confirm tank drawing, finished dimensions, operating water depth and quantity. |
Specification note: “Heavy duty” should not be defined by GSM alone. A higher-weight fabric can still fail early if the reinforcement, coating adhesion, weld quality, frame interface or drain detail is unsuitable. Conversely, an over-specified material can add unnecessary cost and handling difficulty. Match the structure to the tank.
Choose stronger reinforcement whentank size, handling, suspended areas or attachment loads are higher.
Prioritize UV formulation whenthe liner edge and wall remain exposed outdoors for long periods.
Review cold flexibility wheninstallation or operation occurs in low-temperature environments.
Review chemical compatibility whensalt, disinfectants, medications or cleaning chemicals contact the liner.
Fabrication details
Where Tank Liners Commonly Leak or Wear — and What to Specify Instead
Buyers comparing an aquaculture tank tarpaulin supplier should look beyond the center of the fabric. Edges, welds and fittings are usually more informative than a glossy material sample.
Seams & Panel Planning
Large liners are assembled from panels. The seam map should reduce unnecessary intersections and keep critical welds away from highly stressed hardware where practical.
- Confirm welding process and seam configuration before mass fabrication.
- Keep production settings tied to the agreed material batch.
- Inspect representative welds rather than relying only on visual appearance.
Bottom Drain & Outlet
Biofloc and RAS tanks may rely on bottom or side drainage. A poorly supported penetration can concentrate stress and create a leak path even when the field fabric remains intact.
- Provide drain diameter, flange style and exact location on the drawing.
- Discuss reinforcement around penetrations where needed.
- Allow the liner to settle without hanging from the pipework.
Frame Contact & Underlay
Galvanized panels, pipes, masonry or ground bases can all create abrasion or puncture risks if edges and debris are not controlled.
- Remove burrs, sharp fasteners, stones and welding spatter.
- Use protective underlay where the base or support surface is rough.
- Radius or cover corners that become concentrated load points under water pressure.
Top Edge & Attachment
The top edge should locate the liner without forcing the full water load into isolated eyelets or a narrow unsupported strip.
- Define hem, rope, clamping or frame attachment method before fabrication.
- Avoid overly tight installation before the liner settles during filling.
- Protect exposed edge zones from repeated rubbing against the frame.
Tank sizing
Quote by Tank Geometry, Not by “10,000 L” Alone
Two tanks can hold similar volumes but require different liner area, panel layout and fittings. Diameter, wall height and operating water depth are more useful inputs than capacity by itself.
Round tank volume (m3) ≈ π × (diameter ÷ 2)2 × water depth
1 m3 ≈ 1,000 L. This geometric estimate helps check approximate operating capacity; final safe water depth and frame design should follow the actual tank system engineering.
Faster quotation
Send These Details with Your Inquiry
Tank shapeRound, rectangular, raceway or custom geometry.
Finished dimensionsDiameter / length / width / wall height.
Operating water depthNormal fill level, not only frame height.
Species & systemFish, shrimp, biofloc, RAS, nursery or holding.
Indoor / outdoorUV, temperature and weather exposure.
Water chemistryFresh / salt water plus treatments or disinfectants.
FittingsBottom drain, side outlet, overflow, aeration ports.
Supply scopeRoll material, welded liner or repeat OEM program.
QuantityPrototype, project batch or wholesale schedule.
Required documentsState any market-specific test or compliance requirement.
Customization workflow
From Tank Drawing to Repeatable Fabrication
Custom aquaculture tank tarpaulin should be managed as a repeatable specification, especially for equipment distributors, farm expansions and multi-tank projects.
1
Define Duty
Tank type, water, temperature, exposure and cleaning regime.
2
Review Drawing
Geometry, seams, top edge, outlets and drain coordinates.
3
Select Material
Reinforcement, coating, weight, color and required functions.
4
Fabricate & Check
Welded panels, dimensions, workmanship and agreed QC points.
5
Pack for Installation
Marking, folding and batch identification for project handling.
B2B procurement
Manufacturer, Supplier or Wholesale Program — What Should Buyers Actually Compare?
Search terms such as aquaculture tank tarpaulin manufacturer, supplier and wholesale often lead to very similar product claims. A stronger purchasing decision compares how the supplier controls material, fabrication and repeat orders.
For Fish Farms & Project Contractors
Prioritize fit, installation reliability and service conditions. A practical purchase specification should make installation easier and reduce surprises on site.
- Request a drawing review for non-standard tanks.
- Confirm drain, flange and attachment details before fabrication.
- State outdoor exposure, water temperature and cleaning chemicals.
- Agree the material reference and workmanship standard for replacement liners.
For Distributors, OEMs & Wholesale Buyers
Aquaculture tank tarpaulin wholesale programs benefit from repeatable construction and documentation more than from one-off sample appearance.
- Lock key dimensions, material structure and color reference after approval.
- Define roll or finished-liner packing for local handling.
- Use batch / purchase-order records to support repeat supply.
- Discuss private-label or project marking requirements before production.
DERFLEX manufacturing fit
Why DERFLEX Is Relevant to Aquaculture Tank Tarpaulin Projects
DERFLEX approaches the product from both the coated-fabric side and the flexible-containment fabrication side, allowing buyers to discuss material and finished-liner requirements within the same project brief.
Coated-Fabric Manufacturing
PVC coated polyester is a core DERFLEX material platform, supporting control of reinforcement, coating and functional options before the material reaches fabrication.
Weldable Containment Experience
Existing DERFLEX water-tank and liner applications provide a practical foundation for welded panels, flexible tanks and aquaculture containment.
Custom Project Review
Tank shape, dimensions, fittings, exposure and supply format can be discussed before quotation instead of forcing buyers into a fixed retail configuration.
Roll or Fabricated Supply
Local fabricators may prefer roll material, while equipment suppliers may need made-to-dimension liners or repeat fabricated assemblies.
Specification-Oriented QC
Mechanical properties, dimensions, coating consistency and weld workmanship can be tied to agreed purchase requirements where applicable.
Export B2B Support
The project can include packing, marking, quantity planning and documentation needs for distributors, OEM buyers and aquaculture contractors.
Related DERFLEX resources
Compare Adjacent Aquaculture & Water-Containment Materials
These six internal resources help buyers move from the aquaculture application to liner materials, pond systems and the underlying PVC coated-fabric platform.
Fish Farming Tank LinerAquaculture liners for fish tanks, shrimp farming, biofloc and related pond systems.
PVC Tarpaulin for Biofloc Fish TankExisting DERFLEX PVC coated fabric construction and aquaculture tank reference data.
PVC Tank Liner ManufacturerEngineering-oriented guidance for custom reinforced tank liners and welded containment.
Fish Pond LinerWaterproof lining solutions for fish ponds, aquaculture farms, reservoirs and lined basins.
Irrigation Pond LinersPond and reservoir lining options for agricultural water storage and outdoor containment.
PVC Coated FabricCore coated textile platform for waterproof, weldable and custom industrial fabrication.
FAQ
Aquaculture Tank Tarpaulin Questions from Buyers
What is an aquaculture tank tarpaulin?
An aquaculture tank tarpaulin is a reinforced flexible waterproof liner used to contain water in framed fish, shrimp, biofloc, nursery or related aquaculture tanks. PVC coated polyester is commonly selected because it combines a textile reinforcement with a weldable waterproof coating.
Can DERFLEX make custom aquaculture tank tarpaulin sizes?
Yes. DERFLEX can review custom dimensions, shapes, seam layouts, colors and project details. For an accurate quote, provide the tank drawing, operating water depth, drain / outlet locations, quantity and whether you need roll material or a fabricated liner.
What makes a heavy duty aquaculture tank tarpaulin?
Heavy-duty performance should be judged by more than GSM. Reinforcement, coating adhesion, tensile and tear properties, seam quality, outdoor exposure, frame contact and fitting details all influence real tank performance. Larger or repeatedly handled tanks may justify a stronger construction after project review.
Is PVC aquaculture tank tarpaulin waterproof?
The PVC coating is designed to provide a waterproof barrier, but the finished tank also depends on welded seams, drain fittings, penetrations and correct installation. A complete waterproof aquaculture tank tarpaulin specification therefore includes both material and fabrication details.
Is every PVC tank liner automatically safe for fish or food-contact use?
No assumption should be made across all PVC formulations. If a project requires fish-contact, food-contact, potable-water or another specific compliance document, state the exact standard and destination market before production so the appropriate formulation and documentation can be reviewed.
What information should I send an aquaculture tank tarpaulin supplier for a quotation?
Send tank shape and dimensions, operating water depth, species / aquaculture system, indoor or outdoor exposure, water chemistry, cleaning chemicals, inlet / outlet / bottom-drain details, required material or compliance documents, quantity and delivery destination.
Project quotation
Send DERFLEX Your Tank Size, Water Depth and Drain Layout
Fo, r a more useful quotation, include a drawing or sketch, intended aquaculture system, dimensions, operating environment, fittings, quantity and any required compliance documents. DERFLEX can then review a practical aquaculture tank tarpaulin material and fabrication scope for your project.