Active peat pellets for freshwater aquarium filters.Key Features:• Reduces carbonate hardness and pH value, prevents growth of algae, adds natural humic substances: active peat pellets for the use in aquarium filters.• Use: wet 24 hours before use, decant carbon into net bag, embed into the filter.• Two peat components with different humic substance content: fast initial effect, well dosed long-term effect. Prevents algae growth: very light amber water colouring.• Ideal keeping and breeding conditions for fish from blackwater habitats.