Natural volcanic substrate for aquascaping.

Main Features:
• Substrate made from volcanic rocks as a stable foundation for construction using rocks and root woods: substrate dedicated to aquascaping tanks.
• Essential substrate for natural tanks: porous volcanic rocks ensure water circulation at the bottom. Provides plant roots with organic nutrients.
• Strong plant growth: ideal oxygen supply and circulation through the porous structure. Long-term supply of nutrients and minerals.
• Safe, non-slip foundation: volcanic rocks interlock tightly. Ideal as a stable base.