City-Data Forum Local koi pond questions (Raleigh: how much, house, closing)
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 Raleigh, Durham, Chapel Hill, Cary The Triangle Area
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02-20-2012, 09:26 AM
 8,583 posts, read 16,023,087 times Reputation: 11355

Does anyone know how much having a Koi pond will increase an electric bill.
I assume the pump runs 24/7.

ALso in this area does the water have to be heated in the winter.

Thanks as always !!!!

02-20-2012, 11:15 AM
 Location: Raleigh, NC 2,743 posts, read 4,833,231 times Reputation: 3950
The cost of running a pump depends on how powerful that pump is, and how long it runs.
If we assume the pump is 180 watts (a 4,000 GPH circulating pump, suitable for a 4,000 gal pond), and that it runs 24/7/365, then:

The power consumed is:
180 watts = 0.180 Kilowatts (about 1/10th the power used by a hair dryer)

The run time is:
24 hours/day X 365 Days/Year = 8,760 hours/year

The cost is:
The average cost of residential power is 8.94 cents/kwh (per Duke Power, before the 2012 rate hike, which passed) so lets use 0.10 \$/kwh

For one year that calculates as: (0.18 kw * 8760 hr/yr) * 0.10 \$/kwh
=\$158/yr

The need and cost and size of a heater is MUCH more variable, depending on the pond size, climate, insulation around the pond, temperature setting for the water. I can't help you with that, you'd need to ask someone who lives in this area who has a similar system.

One interesting thing, make sure you talk to some people locally who already have a pond. I had a friend of mine build one in his backyard. It was very pretty for several months, until the migration season for some large bird started. In three days, every last fish had vanished. He had to restock, and put mosquito netting over the entire area.

02-20-2012, 06:30 PM
 Location: RTP area, NC 1,277 posts, read 3,550,581 times Reputation: 962
We have a tiny pond - it isn't heated in the winter. fish do fine. they do like to have a place to 'hide' from the bird predators as mentioned in post above.

02-20-2012, 07:54 PM
 Location: Chapel Hill, N.C. 36,499 posts, read 54,141,054 times Reputation: 47919
We had 3 in our previous Atlanta yard. Two which were connected with a rock bed and one tiny one. We went to Koi Club meetings for over a year to get as much information as we could. We had our ponds built 3-4 feet deep and never lost any fish to herons or raccoons although we had to chase a bunch off. We kept the same 18 fish for almost 20 years and it made me so sad to leave them when we moved to NC but I could not figure out a way to transport them here since they were huge.

A koi pond is very relaxing and we enjoyed the fish very much but upkeep became expensive and my husband refuses to have one built here. I have to say I don't blame him but I do miss sitting in the sunshine on the rocks hand feeding our fishy babies.

02-20-2012, 09:59 PM
 8,583 posts, read 16,023,087 times Reputation: 11355
I am closing in 2 months on a house with a huge koi pond.
I need to get a crash course on their care..

Is there a business/store in Raleigh that will help me and that carries
supplies I will need ?

02-21-2012, 06:41 PM
 Location: RTP area, NC 1,277 posts, read 3,550,581 times Reputation: 962
atlantic avenue orchid and garden center on atlantic ave in Raleigh has a water gardening section and can answer questions about water plants and koi ponds. They were helpful when we were searching for water plants.

Atlantic Avenue Orchid & Garden Home
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