• external canister filters

    From Grant@1:278/230 to All on Thu Jul 1 12:53:00 2004
    I am busy examining the specifications for various external
    power/canister filters, and was hoping someone could explain what the specification "Delivery head 1,50 m/WS" means. I guessed it was to do
    with the distance between the filter base and the surface of the water
    in the aquarium, however for the same filter this figure above is for,
    there is also listed the specification "The distance between water
    surface and base of the filter should not exceed 180 cm"

    Hence I am at a loss...any suggestions??


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