Natural sand with bacteria which can be used without washing!
Size grain: 1mm or less
| Size of aquarium (water capacity) | Amount of this product | |
| Aquarium with fish | Aquatic plants only | |
| Small aquarium (up to about 10 L) | 1 bag or more | 2 bags or more |
| Width 30 cm water tank (about 20 L) | 2 bags or more | 4 bags or more |
| Width 45 cm water tank (about 35 L) | 6 bags or more | 12 bags or more |
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