Lysimachia nummularia 'Pennywort', commonly used in tissue culture form for aquariums, is valued for its ornamental leaves and ground-covering growth habit.

Water Parameters for Optimal Growth

• Temperature: 18°C to 26°C (64°F to 79°F)
• pH Level: 6.0 to 7.5
• Hardness: 3 to 10 dGH (soft to moderately hard water)
• Lighting: Moderate
• CO2 Addition: Beneficial but not mandatory
• Nutrient Levels: Regular fertilization, particularly with intense lighting

Although it is slow growing, the attractive flowers that it develops once it reaches the water surface make it worth the wait.

For optimal growth, Green Pennywort requires good lighting and a nutrient rich substrate such as gravel. This plant is suitable for cooler climates, as it can tolerate cooler temperatures periodically. Once established, it can be propagated through cuttings.