Our
tests have shown that the best way to fill your bertha filters with
mediafor optimum results is as follows:
First bay:
28 filter brushes (20" x 8")
Second and/or
third bays: 1/4 cubic metre of flo-cor per bay.
Last Bay:
Laid out as below using foam blocks and Blue matting
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Suggested
media content for last bay in gravity fed Bertha installation.
Consisting of:
3 sheets blue
filter matting fitted below a vacuum exhaust matrix complete with
30 sponge blocks fitted on perforated
inserts.
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Aternative
last bay gravity return for pump fed systems. Showing (right)
two 110 mm return outlets and two 2" overflows.
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Shown
right is an actual installation fitted to a seven thousand gallon
pond. Bertha modules do not need to be fitted in straight lines
as can be seen from the diagram below. Modules can be fitted around
corners to help maximise flexibility of installation. |
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