Comparing Pump Types & Pricing

Is there information on types of external pumps to use for ponds?  Swimming pool pumps are a lot cheaper than pumps specifically made for ponds.

When comparing the cost of pumps you need to compare flow rate and head capabilities, but most importantly, figure out total operating costs not just the purchase price.  In most cases, you will be money ahead, usually in the first 12 months, by purchasing an energy efficient model.  Based on energy costs of $0.08/kw-hr, a pump will cost $5.84 per month to operate for every 100 watts of power it requires.

An example would be:

Pump A (low efficiency) has a purchase price of $233.00 and uses 750 watts.  Total Year 1 cost = $233.00 + (12 months x $43.80/month) = $758.60

Pump B (high efficiency) has a purchase price of $430.00 and uses 180 watts.  Total Year 1 cost = $430.00 + (12 months x $10.51/month) = $556.12

In this example, you are money ahead after only 6 months, even though the low efficiency model was $200.00 cheaper initially.

Tim Boettcher, True Pump & Equipment, Inc., Denver, CO, 303-744-0849

About dorothym

I am the Secretary of the Colorado Water Garden Society.
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1 Response to Comparing Pump Types & Pricing

  1. Fred paoli says:

    I have a stone fountain on my patio with a 6′ diameter basin about 16″ deep. Is there any plant which would grow in it without the soil base you describe is needed for water lillies?

    Fred, you can add some floating plants such as Water Lettuce (Pistia stratiotes) or Water Hyacinth (Eichornia crassipes) that will do well without planting them in soil. Depending on where you live, the Water Hyacinth may be considered “invasive” and therefor would be difficult to come by. You can also try Moneywort (Bacopa monnieri) or Hornwort (Ceratophyllum demersum).

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