Engineered for 24-hour continuous use, Big Frog Eco-Drive Pumps are reliable around the clock. Big Frog Eco-Drive Pumps contain absolutely no oil making them completely fish safe. These pumps are specifically designed for low head applications to work with 90% of all ponds. With the help of the overload sensor shut-off protection, Big Frog Eco-Drive Pumps are able to prevent overheating and burning out. Plus, the low suction point on Big Frog Eco-Drive Pumps is perfect for clean-outs and draining! The Big Frog pump comes with a 2-year warranty.
Big Frog Eco-Drive Models 3000 - 6500
Big Frog Eco-Drive 15000
Choosing the Right Size Pump for My Water Feature
When deciding which pump will work best for you pond, you will need to take three things into account: pond type, head height, and friction loss.
Water Garden, Few Small Goldfish: Circulate total pond water volume every 2 hours. Example: 2,000 GPH pump for 3000-gallon pond with 2" waterfall.
Fish Pond, Several Small Fish: Circulate total pond water volume every 1 hour. Example: 3,800 GPH pump for 3000-gallon pond with 2" waterfall.
Koi Pond, Several Large Fish: Circulate total pond water volume every 3/4 of an hour. Example: 5,500 GPH pump for 3000-gallon pond with 2" waterfall.
To calculate the head height, take 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: Head height is important to take into consideration due to the laws of fluid dynamics. Please refer to the flow chart above to help choose the correct pump.
Choosing the Right Size Tubing for My Water Feature
When Sizing your Freeze Flex Pond Hose, make sure you choose a pipe that will not restrict the flow of your pump! If your hose is 1.5" and you buy a 6,000 GPH pump, your pipe will only allow 4,400 GPH to pass through it. You will be wasting money on electricity and paying for a stronger pump that will not give you the desired result. You will need to run an additional pipe or change your hose to get the desired flow rate! Many people expect to achieve greater flow by simply buying a larger pump. They do not realize that flow will not increase unless the tubing can also support this increase inflow. Please do not let this happen to you. Using the chart above, you will be able to easily determine the best size tubing for your pump size. Do not use pumps on an extension cord. They must be run on a dedicated 15 Amp GFI circuit.
How Much Water is Held by My Water Feature?
Length x Width x Average Depth x 7.48 = Gallons
Example: A rectangular pond that is 15’ long, 10’ wide and 1.5’ deep is... 15’ x 10’ x 1.5’ x 7.48 = 1683 Gallons
Length x Width x Average Depth x 0.8 x 7.48 = Gallons
Example: An oval pond that is 15' long, 10' wide, and 1.5' deep is... 15' x 10' x 1.5' x .08 x 7.48 = 1346 Gallons
Radius x Radius x Average Depth x 3.14 x 7.48 =Gallons
Example: A round pond that has a 12' diameter and is 1.5' deep is... 6' x 6' x 3.14 x 1.5' x 7.48 = 1268 Gallons
Length x Width x 0.25 x 7.48 =Gallons
Example: A stream that is 20' long, 3' wide, and 3" deep is... 20' x 3' x 0.25 x 7.48 = 112 Gallons
Big Frog Eco-Drive Specifications