How To Compare Garden Pond Fountain Filter & Waterfall Pumps To Save Money
There are 5 important aspects to choosing the right pond pump on the basis of
optimum performance at optimum cost. The factors are ...

Determine the optimum pump
flow rate.

Optimize pump head
(pressure) by removing any obstructions to flow and minimising actual height
to which you want to pump water.

Purchase price of the selected pump.

Running cost of the selected pump which is
mainly the cost of electric power.

Guarantee period and value of the pump
guarantee (read the instructions).
We've already discussed the importance of flow and volume and pump head or
pressure. To refresh your memory just click the links above.
Let's talk now of the cost implications and here is where many people make an
expensive mistake. They buy a pond pump based not upon total cost (ie running
cost over 3 years PLUS purchase price, but on price of the pump only. Pond
keepers generally focus only on the price at which they have to buy the pump.
In this next section we will show you how to compare total cost and clarify why
the running cost is so important. We will also show you how to use this information
to save money by buying 2 pumps instead of 1 where you have a pond and a
waterfall.
Bradshaws sell 2 ranges of pond and fountain pumps called the Lotus Maximus
range and the Hozelock Cascade range. In the table below I've selected 2 similar
pumps based upon performance ...
Pump Model 
Flow at 1metre head in lph 
Lotus Maximus 2000 
1800 
Hozelock Cascade 3000 
1875 
Lotus Maximus 3000 
2790 
Hozelock Cascade 4000 
2800 
Many buyers would tend to choose the Lotus Maximus pond, fountain or
waterfall pump based only upon this information but lets now include 2 more
columns.
Pump Model 
Flow at 1metre head in lph 
Power consumed in Watts by the product 
Lotus Maximus 2000 
1800 
98 
Hozelock Cascade 3000 
1875 
30 
Lotus Maximus 3000 
2790 
104 
Hozelock Cascade 4000 
2800 
40 
You can now see that the best buy from an economics point of view is the
Hozelock pump even though it costs quite a bit more. To really convince yourself
add the buying price to the electrical power cost for 3 years and you will
notice the more expensive pump to buy actually costs a lot less.
How To Work Out Running Cost For Any Pump ... or at least the electricity
cost

Most pump manufacturers state the Wattage used by the pump on the box. If not
they will certainly provide the amps used on the label attached to the pump body
itself. If you do not see Watts first convert Amps to Watts as follows ...

Amps x Volts = Watts so if your pump uses .2 Amps and the voltage is 220
volts then the Wattage for the pump is approximately 44 Watts. This also means
the pump will consume 44 divided by 1000 units of electricity per hour (1 kWhr =
1 unit)

Here's the formula to work out costs per year

Pump runs "H" hours per day

Pump power = "W" Watts

Cost per unit of power ="C" in pence

Cost per year = "Y"

Then ... Y=[W/1000 x Hx365 x C/100] in Pounds per year
Obviously if you run the pump for less than 24 hours per day
then the total cost will come down but as we've discussed a fish
pond must have a bio filter and the water must be pumped through
the filter 24 hours per day. Now here's a way to use this information
to save money in any fish pond that has a waterfall. In addition
it also a good option to make sure your pond always has a viable
pond filter.
