25' x 25' 20-Mil LLDPE Pond Liner

Description

Half Off Ponds 20-Mil LLDPE Pond Liner
20-Mil LLDPE is an economical, extremely durable pond liner with high tear and puncture resistance, and high impact and tensile strength, yet is pliable and flexible, conforming to a variety of irregular surfaces.
Half Off Ponds LLDPE is an excellent choice for residential project like water gardens, fish ponds and backyard waterfalls with gently sloping sides and smooth contours. Half Off Ponds LLDPE also meets the demands of landscape contractors and water feature installers working large commercial and municipal projects like business campus retention ponds, public works water features and residential beautification installations.
Half Off Ponds LLDPE attaches easily to waterfalls and skimmers. It works best in sweeping corners and bottom transitions. LLDPE does not easily conform to tight corner radiuses or sharp bottom-to-side angles.
Half Off Ponds LLDPE is completely fish, wildlife and aquatic plant safe. It resists stress cracking and is backed by a 10-Year Manufacturer's Warranty, even if it's exposed to direct sunlight. In non-exposed installations, where the liner is covered by earth, rock or water and shielded from direct sunlight, Half Off Ponds LLDPE has a life expectancy of 40 years or longer; and thats a very long time!
Half Off Ponds - HOPLDP25X25-20 - 25 ft. x 25 ft. 20-Mil LLDPE Pond Liner
Half Off Ponds 20-Mil LLDPE Pond Liner
20-Mil LLDPE is an economical, extremely durable pond liner with high tear and puncture resistance, and high impact and tensile strength, yet is pliable and flexible, conforming to a variety of irregular surfaces.
Half Off Ponds LLDPE is an excellent choice for residential project like water gardens, fish ponds and backyard waterfalls with gently sloping sides and smooth contours. Half Off Ponds LLDPE also meets the demands of landscape contractors and water feature installers working large commercial and municipal projects like business campus retention ponds, public works water features and residential beautification installations.
Half Off Ponds LLDPE attaches easily to waterfalls and skimmers. It works best in sweeping corners and bottom transitions. LLDPE does not easily conform to tight corner radiuses or sharp bottom-to-side angles.
Half Off Ponds LLDPE is completely fish, wildlife and aquatic plant safe. It resists stress cracking and is backed by a 10-Year Manufacturer's Warranty, even if it's exposed to direct sunlight. In non-exposed installations, where the liner is covered by earth, rock or water and shielded from direct sunlight, Half Off Ponds LLDPE has a life expectancy of 40 years or longer; and thats a very long time!
Half Off Ponds - HOPLDP25X25-20 - 25 ft. x 25 ft. 20-Mil LLDPE Pond Liner
Economical liner with excellent durability, high tensile and impact strength, and puncture resistance.
Pliable and flexible; conforms to a variety of irregular surfaces. Excellent choice for projects like retention ponds, above and below ground water containment, and for water gardens, fish ponds and backyard waterfalls with gently sloping sides and smooth contours.
Attaches easily to waterfalls and skimmers. Works best in sweeping corners and bottom transitions; does not form-fit to tight corners or sharp angles.
Resists stress cracking damage from sunlight. Fish and wildlife safe.
Standard 10-Year Manufacturer's Warranty when exposed to direct sunlight; 40+ years of life expectancy when not exposed to direct sunlight and when covered by earth, rock or water.
FAQs & Calculations to Help Select the Correct Kit
1. How Many Gallons of Water does My Water Feature Hold?
Rectangular Ponds
Length x Width x Average Depth x 7.48 = Gallons
Example: A rectangular pond 15’ long, 10’ wide and 1.5’ Deep Pond is...
15’ x 10’ x 1.5’ x 7.48 = 1683 Gallons
Oval Ponds
Length x Width x Average Depth x 0.8 x 7.48 = Gallons
Example: An oval pond 15’ long, 10’ wide and 1.5’ deep is...
15’ x 10’ x 1.5’ x 7.48 = 1683 Gallons
Round Ponds
Length x Width x Average Depth x 7.48 =Gallons
Example: 15’ long, 10’ wide and 1.5’ Deep Pond
15’ x 10’ x 1.5’ x 7.48 = 1683 Gallons
Streams
Length x Width x Average Depth x 0.25 x 7.48 = GALLONS =Gallons
Example: 15’ long, 10’ wide and 1.5’ Deep Pond
15’ x 10’ x 1.5’ x 7.48 = 1683 Gallons
2. How Big of a Pump Do I Need??
Minimum pump size is determined by pond type, water volume, head height and friction loss. The minimum pump size recommendations are:
Water Garden, Few Small Goldfish
Circulate total pond water valoume every 2 hours.
Example: 2,000 GPH pump for a 3000-gallon pond with 2’ waterfall.
Fish Pond, Several Small Fish
Circulate total pond water valoume every 1 hour.
Example: 3,800 GPH pump for a 3000-gallon pond with 2’ waterfall.
Koi Pond, Several Large Fish
Circulate total pond water valoume every 3/4 hours.
Example: 2,000 GPH pump for a 3000-gallon pond with 2’ waterfall.
Calculating Head Height
Dynamic head pressure is found by taking the vertical height of your waterfall; the distance between where your pump is (typically in the skimmer) and where your waterfall is, and adding the static head pressure (pipe and fittings) 1’ for every 10’ of tubing and 1’ for every elbow or “T” fitting.
Example: 3' (vertical height) + 2.5 (25' of tubing) + 2' (for 2 elbows) = 7.5' of Dynamic Head Pressure
Note:
It is important to take into consideration while calculating how much flow will be at the top of your waterfall by accounting for the head height due to the laws of fluid dynamics. Please refer to the flow chart above to help choose the correct pump.
3. What Size Tubing Do I Need?
Tubing Size
Efficiency GPH
Minimum GPH
Maximum GPH
0.5”
< 300
60
420
0.75”
< 720
300
900
1”
< 1,200
700
1,500
1.25”
< 1,600
900
3,200
1.5”
< 2,600
2,000
4,400
2”
< 4,800
3,000
6,800
3”
< 9,000
6,000
14,000
4”
< 21,000
14,000
28,000
6”
< 42,000
33,000
60,000
About Half Off Ponds
Customer service is our business. We have been satisfying fish pond, water garden, and backyard waterfall enthusiasts for over 25 years! We're glad to assist you with your pond building project - from start, to finish!
Thanks for your business! We appreciate it!
- The Half Off Ponds Team