![]() ![]() Stronger pumps can supply larger flow rates at higher amounts of head. That’s because the higher water travels, the more gravity and friction resist its flow. ![]() As head increases, a pump’s flow rate decreases. Head is an engineering term that refers to the height that a pump lifts water above the surface of a pond. Instead, a pump’s flow rate varies based on a quantity called head height, or just head. Pumps don’t supply the same flow rate in every situation. Once you know the flow rate you need, the next step is to estimate your setup’s head height. The more energy your pump can supply, the more water it can move at one time. Depending on where you live, flow rate is usually given in gallons per hour (GPH) or liters per hour (LPH). Flow rate refers to volume of water moved per unit of time. The first step in sizing a pump is finding the flow rate you need. The more height there is in the system, the higher the flow rate and head height requirements of the pump. In this guide, we attempt to break down the complex calculations associated with flow and make it easier to correctly size pumps for all sorts of water features and fish ponds. Together, they tell you how much water a pump can move and how much resistance it can overcome. To size a pump, you need to consider two important numbers: flow rate and head. In the same way, you’d need a different pump to circulate water in a large, heavily stocked pond than you would to supply a small waterfall. You wouldn’t use the same engine to power a diesel truck and a compact car. Pumps come in a variety of sizes and strengths, and the type you choose should depend on what you need it for. Most pumps are either submersible, meaning they sit on the bottom of the pond, or external, meaning they’re positioned above the water line. Equipment like filters, waterfalls, and fountains each need specifically sized pumps to function well. Keeping the water moving also helps to promote aeration and nutrients throughout the pond and discourages the growth of pests like mosquitos and algae. ![]() By circulating the water in your pond, a pump helps keep fish healthy by maintaining safe levels of dissolved oxygen. The right pump can be a crucial part of a garden pond’s ecosystem. calculate the number of gallons, knowing the pond is 2222 gallons.Choosing the right size pond pump is important to obtain optimal flow, but also so as not to damage equipment. ![]() This calculation also works the opposite way, to find the number of litres from the known number of gallons in your pond, by multiplying instead of dividing.Į.g. 10,000 \ 4.5 = 2222 uk gallons Converting Gallons to Litres calculate the number of gallons by knowing the pond is 10,000 liters: Our Pond volume calculator gives you both but If you require this capacity in gallons, though most companies now work with litres, you will need to divide the number of liters by 4.5Į.g. a pond that is 5m long and 2m wide and 1m deep would use the calculation: 5 x 2 x 1 = 10ġ0 x 1000 = 10,000 litres Pond Water in Gallons Once you have all three dimensions, you need to multiply these all together and then multiply this calculation by 1000.Į.g. You can then either use our Pond volume calculator above or use the calculations explained below If your pond is not a regular shape you will need to work out the average of all sizes and use this to calculate the capacity. The easiest way to do this is to measure the length, the width and the depth of your pond in meters. It will allow you to choose the right equipment for your pond, and the required amount of treatment required for your pond should you need to treat it. By using our Pond volume calculator to work out how much water is in your pond. ![]()
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