Mountain Tree Bacteria House Generation 3 for freshwater, 6650 surface area (sqm/pc), 8*25 cm, 12 pieces in a box

This product features an upgraded spiral design for maximizing space for nitrifying bacteria and enhancing fish and microbial health.

• The description claims the product improves fish immune systems and colorings.
• The description claims the product helps fishes grow stronger.
• The description claims the product contains various minerals for fish, coral, and plants.