A scientifically formulated substrate from natural soil sintered into a porous and granular structure with excellent filtering power.

Sintered with organic acid; suitable for shrimp, freshwater fish, and plants.

Helps maintain stable, healthy, and clear water for a long period of time.

Lowers PH/KH of the water; creates weak acid and soft water environment.

Rapidly removes cloudiness and supports the development of aerobic bacteria.

Made in Japan.

Ista Premium Soil Large Grain