01-01-2013, 08:42 PM
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lift your filter inlet further away from the bottom of the sand, plus sand getting into the filter can damage the impeller on the pump, might be a good thing to give your filter a clean whilst you are at it.
Give the filter a clean using tank water so that you do not kill off the good bacteria that lives there.
Looks like your filter could be sucking a bit of sand up with the water, so moving the inlet away from the sand, or digging the sand away from the filter should stop it,,, the filter should have stopped the sand from re entering the tank, so check the pads for any gaps that the sand can bypass,
Hope this helps