"Haymish Pupkin" wrote in message
.uk...
I will be using a clarke hippo 2 pump (which I have used before, cheap and
cheerful) on my 6 meter high waterfall. This pump has a max flow rate of
85 L/Min. With this in mind I was looking to match the pump with a
Hozelock Bioforce 9000 UVC, however, at max rate the pump can pump about
5000 litres per hour but I know this will be reduced as the pump is
pumping 6 metres up in the air before it reaches the filter. My question
is this; does anyone have any idea how much the flow rate will be reduced
or how I could find out? If the flow rate is halved I could use the
Hozelock Bioforce 4500 UVC instead.

What happens if you exceed the max flow rate on the Hozelock Bioforce
range of filters? Will the unit die because the pressure is too high or
will it just not filter the water as well as it should?


Lifting water a column of water 6 meters? That's probably well out of spec
of any consumer water pump. Assuming no other restrictions on the water
flow. The water itself would create about 8.5 psi of back pressure, I would
be surprised if you produced more then a trickle.

A 6 meter waterfal is rather high, most of us here have 1 meter or less. 6
meters is upto the roof of a 2 story building.

Does anyone have the phone or e-mail address for the Clarke (hippo) water
pump people?

The all seeing eye of Google knows everything.
http://www.clarkeinternational.com/
Their website is fairly useless, but I suppose it satisfies the answer to
the question "Do you have a website?"

-S