?? [Unused] Filter media for tropical fish tanks, etc. 10-11kg

Resin filter media for fish tanks, such as for tropical fish.

Ideal for filter media in the lower filter layer of overflow aquariums.

Weight: Approximately 10-11 kg
Volume: Roughly, it fits perfectly into a moving box (120cm).
　　　Addendum: I actually put it in a cardboard box and measured the approximate dimensions.
　　　　　　　When packed tightly, it was 51 cm x 34 cm x 25 cm, so
　　　　　　　in this state, it's approximately 43 liters.
　　　　　　　(This is not an exact measurement)

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