| Before
purchasing Black Knight brushes, you should decide what type of
filter design will be best for your pond. |
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How
to use Black Knight Filter Brushes
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If
you have a small pond with a few goldfish and a couple of koi
then a single chamber with three to six lines of brushes will
be ideal. For a more demanding situation, it will be necessary
to use a much larger chamber or to link two or three together.
These can all contain brushes or you can use them in the first
and second chambers and then use a stone medium such as Lytag,
Canterbury Spar or Alfagrog in the last chamber.
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| Recommended
spacing |
| The
distance between the brushes should be as close to the
recommended spacing as possible but the width of the chamber
should be divided by the number of brushes required to give the
spacing For instance, a 31 1/4 inch (79.5cm) wide chamber
would be divided by ten when using 4 inch (10cm) brushes, to
give a spacing of 3 1/8 inch (8cm) between the brushes. |
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| 4"
Brush placed with centers at 3" intervals |
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| How
to hang your brushes |
We
recommend the use of 1/2 inch diameter plastic pipe to make
brush hangers. Standard electrical conduit is ideal for the
purpose.
Slip the loops of the brushes over the pipe and secure each end
either with a grub screw or a cable tie. |
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|
Using
a cable tie to secure the brushes |
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| How
to align Black Knight filter brushes |
When
you have fixed the brushes to the hangers, the other ends need
to be fixed as well otherwise they will hang in a disorderly
fashion.
Cut a piece of plastic about 1/8 inch (0.3cm) thick and cut it
into a strip 3/4 inch (1.5cm) wide and 1 inch (2.5cm) shorter
than the brush hanger. Drill holes at the same intervals as in
the brush hanger; these should be just large enough to pass the
wire through. Remove the knobs, pass the ends through and then
replace the knobs.
These strips will hold the brushes in line and ensure that they
are always held at the correct spacing. |
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| How
to fix Black Knight filter brushes to the chamber |
The
ends of the brush hangers can be secured using ordinary pipe
clips. These can be fixed to the side of the chamber with two
screws per clip. The hangers can be pulled in and out as
necessary.
When using a tank of flimsy construction, it is necessary to put
the clips on top of the edge of the tank and leave a little
extra length on the brush hangers. This will allow for the
amount the tank bows when it is filled with water. |
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