Fish Tank Liquid Sand Filter Hose Holder

Crude attempt at a fish tank liquid sand filter using an inexpensive ~100mm O.D. zip-tie container and 190GPH pump with 12.7mm water line and a set of hose barbs one 90 with barb and threads other direct coupler with barb and threads. Desire is to hold the 12.7mm line relatively centered to prevent sand eruptions that empty out the filter. Note this has no support / gap at bottom to save on filler filament and support material. Support at bottom is accomplished with ~20mm rocks.

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