40 mil pond liner is the widely used anti-seepage geosynthetic material which is made of high-quality high-density polyethylene. BPM HDPE geomembrane pond liner adopts three-layer co-extrusion technology in the production process, and adds antioxidants, high-quality color master batches, anti-aging agents and UV and other auxiliary materials to make the performance of HDPE geomembrane is better, and the service life is greatly increased. The HDPE pond liner is an ideal waterproof and barrier type material, which can effectively prevent water infiltration problems in the project. It can also be used to build biogas digesters. Due to the good sealing properties of HDPE geomembrane liner, it can play a very good preservation effect, no leakage of biogas and low cost.
Case Study Of 40 mil Pond Liner
The Bangladesh customer who has been troubled by the water seepage problem in the fish ponds and the geogas problem. The water seepage in the fish pond made him to replenish the water regularly, but the ground gas has always entered the pond, which has a great impact on the growth of the fish. So the customer consulted us through email.
After detailed communication, we learned about the difficulties that the customer faced. According to the actual situation of the customer, we recommended the 40 mil pond liner to the customer and put forward construction suggestions. Under the geomembrane pond liner, some exhaust pipes were set at the bottom of the fish pond to discharge the ground air and prevent the bulging phenomenon of the geomembrane pond liner. In the end, the customer’s problem was solved and the fish output was greatly improved.
How to Choose the Right 40 mil Pond Liner for Fish Farming
Selecting the right pond liner is crucial for a successful fish farming project. A 40 mil (1.0 mm) geomembrane liner provides excellent durability and protection, ensuring a long-lasting and leak-proof aquaculture environment. Here’s a guide to help you choose the best 40 mil pond liner, with a mention of BPM Geomembrane as a reliable supplier.
Key Factors to Consider
1. Material Type
The most common materials for fish pond liners are:
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HDPE (High-Density Polyethylene): Strong, chemical-resistant, and UV-stabilized, ideal for large fish ponds.
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LLDPE (Linear Low-Density Polyethylene): More flexible and easier to install, suitable for uneven terrain.
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Reinforced Liners: Extra durability for high-stress areas.
2. Thickness (40 mil)
A 40 mil (1.0 mm) thickness provides:
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Strong puncture resistance (important for fish movement and equipment).
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Long-term durability against weathering and wear.
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Better protection against leaks compared to thinner liners.
3. UV Resistance
Since fish ponds are often exposed to sunlight, choose a UV-stabilized liner to prevent degradation over time.
4. Fish Safety
Ensure the liner is non-toxic and safe for aquatic life. Some low-quality liners may leach harmful chemicals.
5. Installation & Seaming
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Smooth liners are easier to clean, while textured liners provide better traction.
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Proper welding/seaming is critical to prevent leaks.
6. Warranty & Lifespan
A high-quality 40 mil pond liner should last 20+ years with proper installation. Check for manufacturer warranties.
Why Choose BPM Geomembrane?
BPM Geomembrane is a trusted manufacturer of high-quality pond liners, including 40 mil options suitable for fish farming. Their liners offer:
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Fish-safe, non-toxic materials
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UV-resistant and durable
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Strong puncture and tear resistance
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Custom sizes and installation support
For a reliable and long-lasting fish farming pond, a 40 mil geomembrane liner from BPM Geomembrane is an excellent choice. Always consult with a specialist to ensure the best fit for your project.
Specifications of 40 mil Pond Liner for Fish Farming Project in Bangladesh
- Geomembrane Pond Liner thickness – 40 mil
- Total Quantity – 10,000 Square meters
- Roll Size – 8m*100m
40 mil Pond Liner Installation Guide for Fish Farming
Proper installation of a 40 mil (1.0mm) pond liner is critical for ensuring long-term performance and preventing leaks in fish farming operations. Here are key installation considerations when using a high-quality geomembrane liner like those from BPM Geomembrane.
Pre-Installation Preparation
1. Site Preparation
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Remove all sharp objects (roots, rocks, debris) from the pond base
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Compact and level the soil to create a smooth surface
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Install a protective geotextile underlayment (recommended for added puncture protection)
2. Liner Handling
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Unroll the BPM Geomembrane liner on a clean, flat area before installation
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Avoid dragging the liner across rough surfaces
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Keep folded liners in shade before installation to prevent overheating
Installation Process
1. Proper Liner Placement
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Allow for extra material (about 3-5% more than measured dimensions) for adjustments
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Smooth out wrinkles as you go, working from the center outward
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Ensure proper overlap (minimum 6 inches) at seams
2. Seaming Techniques
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Use dual-track hot wedge welding for most secure seams (recommended for BPM Geomembrane liners)
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Test all seams with non-destructive methods (air pressure or vacuum tests)
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Avoid seaming in wet or extremely cold conditions
3. Anchoring the Liner
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Create an anchor trench (12-18 inches deep) around the pond perimeter
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Backfill with compacted soil to secure edges
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Allow for some liner movement due to temperature changes
Post-Installation Care
1. Initial Filling
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Fill the pond gradually (about 12 inches per day)
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Adjust the liner as needed during filling to remove wrinkles
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Avoid walking on the liner when filled
2. Protection Measures
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Install erosion control mats in high-flow areas
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Consider a partial water cover during extreme heat
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Regularly inspect for potential damage points
3. Maintenance Tips
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Keep the water pH balanced to preserve liner material
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Remove accumulated debris regularly
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Schedule annual inspections, especially before winter
About BPM
As the the professional geomembrane manufacturer and supplier, BPM has been dedicated to supplying one stop geomembranes and services to worldwide customers since its foundation in 2010. Our main innovative, high quality geosynthetics products include geomembranes, geotextiles, geocells, geosynthetic clay liners (GCLs), drainage boards, geogrids, etc. All BPM brand HDPE geomembranes have passed the certificates of the ISO9001, ISO14001, TUV, Soncap, SASO, BV certificates and the test of SGS and Intertek etc. Our geomembrane products have been exported to over 36 countries. If you have any questions or inquiries, please fill in and submit the form to contact us.
