Easy and easy! Leave the clear and transparent water quality adjustment! Stable in a weakly acidic soft water environment with natural power! Use 100%of domestic natural black soil ○ Reduces difficult water quality adjustment and mass water change! ○ Nutritionally rich safe natural materials made in Japan! ○ Includes organic acids, lower pH and kH to create a weakly acidic soft water environment! ○ Realizes porous by softening method! ○ The filtration bacteria breed and the water rises quickly! ○ Strengthen the roots of aquatic plants with excellent water passage, moisturizing, and fertilizer! ○ Scratch of driftwood! Make it clean and transparent! ○ Adsorbs harmful substances (phosphorus, etc.) contained in food etc.! Prevent moss from occurring! Aquarium for the bottom floor soil black 1.6 to 3.0mm type

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