Koi Pond: Which Pump to Use

When I started in the waterfall and pond design &clients.
construction business in January of 1982, I wasThese easy-to-install, easy-to-make-a-killing liners
asking the same question. I had a slight advantagethat come with a 20-50 year warranty (against
over most when it came to answering thefactory defects only) are actually a meal down
question, “Which pump do I use?”the road to a burrowing gopher, rat, mouse,
I came out of the energy conservation field, so Iground squirrel, chipmunk or muskrat.
was already savvy about energy consumptionHow do I know? I replace liners with concrete and
topics.rebar for a living and I ask if the customer if the
It was a challenge in the seventies, when I wasliner salesman told them the pros and cons about
trying to convince people that they should buythe liner. (Most cons don’t!)
the Mitsubishi compact fluorescent bulb to saveBesides a sump pump costing twice as much to
energy. This was the first of its kind and itoperate than a high efficiency, centrifugal pump,
retailed for $12 to $14. Its lumen or light outputthey plug up easily. (By the way, the liner guys
was equal to a 60-watt incandescent bulb, whichchanged the name to a “submersible
sold for $ .60 in most stores. I needed topump” and they are now using the term
convince the engineer at Betty Ford Hospital that“waterfall pump.”) Concrete and rebar
a $12, 12-watt bulb would save the facilityconstructed ponds with bottom anti-vortex drains
$35,000 a year in electrical costs. I did so, and itseldom, if ever, plug up.
did!In the industry magazine, Water Garden News,
Pumps are no different when it comes tothe vice president of product management for
performance vs. energy consumption. The rule ofthe Aquascape Company stated,
thumb is: If an electrical appliance was engineeredA lot of the time, the more energy efficient the
to be used only occasionally, as opposed to[sump] pump, the less solids and debris it can
continually, rest assured, it is not engineered orhandle. So often the consumer is excited the
built with the highest industry standards in mind.pump will only cost them $10 a month to run, but
Sump pumps were designed to be submergedwhat they did not know is that they are going to
underwater and pump that water to a differenthave to be out there 3 times a week, cleaning
location. Their most common uses are inthe intake of the [sump] pump to keep it going.
basements, bunkers, bilges, and that sort of thing.Water Garden News is a trade magazine that is
These pumps would only come on by demand,for manufacturers, wholesalers and retailers in the
when a float control indicated a high water level.water garden industry. This information was not
Sump pumps were cheap to buy because theymeant for the consumers’ eyes. Until now!
were built cheaply. It did not matter that theyRead my article entitled Pondless Waterfall:
consumed more energy than the more expensiveConcrete vs. Pond Liner ; I cover the subject in
centrifugal pump, since they only came ondepth, and expose the truth about pond liner
occasionally.promoters. All of the costs involved in building a
These pumps turned out to be perfect for thepondless waterfall are analyzed by comparing the
get-rich-quick liner pond industry for three majortwo techniques: using concrete & rebar or a
reasons:rubber liner.
They were cheap to buy, as were the liners;The difference in the cost of energy consumption
They were simple to install; andbetween a 5700 gallon per hour sump pump and
They were easy to hide.a 5800 gallon per hour high-efficiency centrifugal
One major drawback of sump pumps that thepump is staggering. The sump pump uses twice
liner pond industry does not share with theiras much energy, costs $171 more to purchase,
clients is that they are literally energy sponges.and its warranty is 6 months less! Look before
But then, that is not the only thing they forget toyou leap and research before you weep.
mention to their usually innocent and unsuspectingHappy koi, peace and joy.