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Clarity Pressure filters
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Three functions ...
Biological, Mechanical & UVC**
**on some models only
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Clarity 12000 UV/C showing |
The pump sitting in the pond pushing water through the external filter* either up to a waterfall or directly
back into the pond. Drawing also shows the backwash hose onto the garden *the filter can either be buried up to the lid or simply
sit on the ground. |
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Aussie's observations
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Suitable for:
Any pond where filtered water is required. In particular when water
is to be pumped to a level such as a waterfall or feature |
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What we liked:
Solid
construction, the number of foam filters. A clever pressure valve built into the unit reduces the chance of
damage if the filter is not cleaned on time.
Good value for money.
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Less than ideal: A small point but
the backwash system on >
Oase
Filtoclear, Laguna
,
Claritec
are easier to use, as hoses do not have to be
reversed.
Pressure
filters in general are not ideal for Koi or Turtles, the better option would be a
gravity filter, however, if a waterfall is in use
with a single pump
for both filtering and waterfall a pressure may be the best option if a
gravity filter box can not be hidden at the very top of the waterfall. |
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Other pressure filters of this type:
Laguna
Pressure Flo
Oase
Filtoclear
Claritec |
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Made in U.K.
2 year warranty |
2500 |
4000 |
8000 |
12000 |
15000 |
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Ideal flow through the filter |
The ideal flow through the
filter is key to choosing the filter size. See steps below to determine that
figure. Also see recommended flow for each model. |
| Approximate pond size |
see
chart |
see
chart |
see
chart |
see
chart |
see
chart |
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Size - Diameter x Height cm |
26 x 42 |
26 x 50 |
36 x 52 |
36 x 66 |
36 x 79 |
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If canister is buried - how much shows above ground
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20cm |
20cm |
20cm |
20cm |
20cm |
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Filter canister capacity - litres |
8 |
14 |
25 |
40 |
50 |
Maximum pump head pressure
(see hint 5 below) |
4m |
4m |
4m |
4m |
4m |
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Number of foam filters |
3 |
3 |
4 |
5 |
5 |
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Bio-balls for micro-organism growth |
yes |
yes |
yes |
yes |
yes |
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Ideal hose size, (hose tail supplied) |
25mm |
25mm |
32mm |
38mm |
38mm |
| Suitable pumps
(see list below) |
below |
below |
below |
below |
below |
| Maximum pump
pressure (see Tip 5) |
0.4 bar |
0.4 bar |
0.4 bar |
0.4 bar |
0.4 bar |
National
warranty - Australia wide
(for more details)
excluding lamp |
1 years |
1 years |
1 years |
1 years |
1 years |
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Standard Clarity |
$175 |
$219 |
$309 |
$349 |
$389 |
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Clarity with UVC |
$349
9 watt lamp |
$384
9 watt lamp |
$469
9 watt lamp |
$519
24 watt lamp |
$609
24 watt lamp |
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Filter selection
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To choose the ideal filter for any pond you must
first know the correct flow through the filter to maintain ideal water quality
for your pond. (Please remember that the pond size alone
does not determine the filter or pump size without first taking into account the
many environmental and physical factors)
3 ways to get help
to establish flow
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Fill in
one of our
e-mail help forms and let us do all the calculations for you
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Give us a call 1800 607 388 for expert
advice
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Do it yourself and use our quick reference
flow calculator for rough
estimate
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Step one: Establish the
required flow through the filter keeping in mind waterfall** height if any, or
long hose**
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Step Two: Choose a filter from the chart below (Example if your pond
requires a flow through the filter of 4,500 litres per hour, the Clarity 12000
would give the best result)
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Step Three: Choose a pump, they are listed below in order of quality and
suitability
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Recommended flow
through the filter - litres per hour
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2500 |
4000 |
8000 |
12000 |
15000 |
| Minimum
flow |
600 |
1000 |
2,000 |
3,000 |
3,750 |
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Ideal flow - See hint 4 below |
1000 |
1,500 |
3,200 |
5,000 |
6,000 |
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Maximum flow - See hint 4 below |
1250 |
2,000 |
4,000 |
6,000 |
7,500 |
Suitable pumps for clarity filters
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2500 |
4000 |
8000 |
12000 |
15000 |
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Most suitable pumps**
Assuming a waterfall is not over 500mm high or
the correct size hose is not longer than 3m |
Project
1200
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Aquamax
2000
Project
2400 |
Aquamax
3500
Project
4000 |
Aquamax
5500
Laguna
6000 |
Aquamax
8500
Laguna
7500 |
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What makes a pump that is
specifically designed for sending water to a filter (such as the pumps
above) superior to a multi purpose pump such as Pondmate
1) The cage design is turtle shell shaped to attract solids from 360
degrees 2) These pumps are designed to run 24/7 year after year
3) They have a vortex impeller capable of handling solids without blocking
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Other workable pumps....... |
Project
2400##
Pondmate
1500 |
Project
3000##
Pondmate
2400 |
Laguna
3500#
Pondmate
4800
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Pondmate
6000
Pondmate DWP6000 |
Pondmate
8500##
Pondmate DWP8500## |
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**Special
note, if using a waterfall or a long hose between pump and filter the pump
will need to be larger to allow for the reduced flow caused by the
head (pumping height, and/or hose length) If in doubt
Fill in
one of our
e-mail help forms and let us do all the calculations for you.
# A little under size
for some pond sizes, but would work if the pond were smaller than the filters
maximum volume rating.
##
This pump is a little too strong, unless a
waterfall over 1m is in place. However, you can never have too much pond flow, so, by
releasing water back into the pond through a "Tee" and flow valve added
circulation is provided for the pond. |
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 Aussie's
additional thoughts
Tip 1: When
calculating flow, always allow about a 15% flow loss when a pressure filter
is used.
Tip 2: Place the pump
at the opposite end of the pond to the water return, and in the deepest part
of the pond.
Tip 3:
If in doubt always choose a pump with less than the
maximum recommended flow and less than the recommended head height. Within
reason the slower the water passes over the UV lamp and through the filter the
better the result. Interpet offer a
powder to prime filter systems, a great way to hasten biological activity.
Pond Bio start
Tip 4: Pump - maximum pumping head. The pump supplying the filter must
not have a pumping head exceeding 4m (0.4 bar) Head over 4m could damage the
filter and could even burst the container. On the other hand a pump with
inadequate head may not provide enough flow through the filter (see pump chart
above )
In a nut shell ....The height difference
between the filter lid and a pressure free outlet must not exceed 4metres (0.4
bar). So if the filter was mounted 1m above the pond surface, the pump must not
have a maximum pumping height in excess of 5m. Or if mounted 2m above the
surface of the pond, the pump must not have a maximum pumping height in excess
of 6m.
There is however another factor in head
calculations if long hose lengths are used, see "Friction loss in hose" under
How to choose your pump / filter
if your hose will be more than 3m.
For
detailed information about how this filter works
 Back to main index
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