Hydrocotyle leucocephala, also known as Brazilian pennywort, can be a beautiful addition to your aquarium. Here are some care tips:

1. Lighting: Provide moderate to high lighting.
2. Water Parameters: Maintain slightly acidic to neutral water conditions (pH 6.0-7.5) and a temperature range of 18-28°C (65-82°F).
3. Height: Can grow up to 50cm.
4. Growth Rate: Fast.
5. Care Level: Easy.
6. Placement: Background or floating.
7. Substrate: Not necessary, can be left floating or planted in substrate.
8. Fertilisation: Regularly fertilise with liquid fertilisers or root tabs.
9. Pruning: Trim the plant regularly to maintain its shape.
10. Propagation: Can be propagated by stem cuttings.
11. Water Quality: Perform regular water changes to maintain good water quality.
12. Compatibility: Hydrocotyle leucocephala is generally compatible with most fish species.
13. CO2 Injection: Not necessary, but can benefit from CO2 injection.
14. Algae Control: Monitor for algae growth and maintain proper balance.