Designed for nature artists and creators • Active substrate with pH buffering and binding of harmful substances • Optimal substrate ready-to-use for aquatic flora • 100% natural clay-based engineered substrate with Bio-filtering function – Clearwater without discolouring effect – Provides complete nutrient supply of macro and microelements for plants – Designed for any water depth, including deep public aquariums – Extreme long-term use of +10 years. It doesn’t crumble in the long run