Water Hyssop: Bacopa monnieri
A hardy and versatile stem plant with small, round, bright green leaves that can grow both submerged and emersed.

Water Hyssop
Water Hyssop, scientifically known as Bacopa monnieri, is a perennial aquatic plant noted for its delicate green leaves and vibrant small flowers. As a versatile addition to aquascapes, it lends a lush, natural aesthetic while playing a vital role in maintaining a balanced ecosystem. Its creeping growth habit makes it ideal for filling out foreground and midground spaces in aquariums, promoting both shelter and visual interest.
Care Guide
Maintaining Water Hyssop requires attention to several environmental factors:
- Lighting: Moderate lighting conditions are optimal. Aim for around 8-10 hours of light daily, using either fluorescent or LED lights to ensure healthy growth and vibrant coloration.
- Water Conditions: This plant thrives in slightly acidic to neutral pH levels (6.5-7.5) and requires stable temperatures between 22-28°C (72-82°F). Regular water changes can help maintain these conditions.
- Pruning: To encourage bushier growth and prevent over-reaching, consider regular pruning. Trimming back stems promotes new growth while maintaining the plant's overall shape in the aquascape.
Nutrient Requirements
To ensure robust growth, Water Hyssop benefits from:
- CO2: Supplementing with CO2 can enhance growth rates, particularly in high-light setups. Aim for balanced CO2 levels to optimize photosynthesis without causing harm to other aquatic life.
- Fertilization: Utilize a balanced fertilizer, either in liquid or substrate form, to provide essential macros and micros. Dose according to the specific needs of your aquarium setup, taking care not to over-fertilize, which could lead to algae issues.
Natural Biomes
Bacopa monnieri is native to several biodiverse environments. Notable biomes where this plant flourishes include:
These regions offer insights into the plant's adaptability to varying water conditions and its role in natural aquatic ecosystems.
Livestock Compatibility
Water Hyssop is compatible with a variety of aquatic inhabitants, including:
- Fish: Small to medium-sized fish like guppies, tetras, and bettas thrive alongside B. monnieri. Their lively movements complement the aquatic garden beautifully.
- Shrimp: Ghost shrimp and cherry shrimp are particularly fond of the protective cover provided by the dense foliage of Water Hyssop, making it a beneficial addition to shrimp tanks.
In conclusion, integrating Water Hyssop into your aquascape not only enhances the overall aesthetic but also contributes to a healthy and thriving aquatic environment.