River sand Crystal sand
Crystal sand is a type of river sand used at the bottom of fish tanks. It provides excellent aquascaping functionality for fish tanks. Its color closely resembles nature, and after artificial processing, its particles are generally uniform and fine. Therefore, placing it at the bottom of the fish tank will not harm ornamental fish, and daily maintenance is also relatively simple.
| Tank Size: | Recommended Usage: |
| 40*30CM | 10 lbs |
| 60*40CM | 25 lbs |
| 80*40CM | 35 lbs |
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