Decorative Water Sizing

How to size your equipment

Every pond and fountain has different sizing requirements for the equipment needed. For your feature to be enjoyed with minimal maintenance it is important to select a properly sized pump, filter, liner, etc. The link below will take you to our calculator to determine the sizing of your equipment.

  1. The first step in any feature is to size the liner required containment. Use the same formula for both the width and the depth of the liner:

    Length + (2 x Depth) + 2 = Length of Liner

    Width + (2 x Depth) + 2 = Width of Liner

  2. Now that the containment is sized the next step in sizing any feature is determining the amount of water you will have. To calculate gallons or liters use this formula:

    Length x Width x Depth x 7.48 = Gallons

    Length x Width x Depth x 1000 = Liters

  3. All of the equipment for a pond or water garden is sized by the number of gallons that it contains. By flowing our water at least once an hour through the filtration system we will reduce the amount of maintenance required. We also need to calculate the flow down the stream and waterfall so it appears natural. The larger flow is the size to select the equipment based on.

    A 3,000 gallon (11,356 L) pond will require products that can handle at least 3,000 gallons (11,350 L) per hour of flow.

    Width of stream (waterfall) ft x 1,200 gph = Stream flow to appear natural

    Width of stream (waterfall) m x 15,000 l/h = Stream flow to appear natural

  4. The most important component of a feature is the pump. It is the heart of the pond circulating the water through the filter and back down the stream into the pond. To determine the correct pump we must know the height it must push the water.

    Measure vertical distance from top of water level to discharge point (top of waterfall)

Sizing Calculator

To calculate the gallons in your pond, follow this formula:

Length x Width x Depth x 7.5 = Gallons.

For example: 4' L x 6' W x 1.5' D x 7.5 = 270 Gallons.

Use the calculator below to compute the gallons.