Water Lettuce grows very quickly under optimal conditions. In warm water (20-25°C) with good lighting, it can double in size every 2-3 weeks. During peak growing season, you may need to remove excess plants to prevent overcrowding.

Water Lettuce prefers temperatures between 15-30°C. It can survive brief periods of cooler weather but will grow slowly below 15°C. In the UK, it's best treated as a seasonal plant for outdoor ponds, brought indoors during winter.

Water Lettuce absorbs excess nutrients (nitrates, phosphates) from the water through its extensive root system. This natural filtration reduces algae growth, improves water clarity, and creates a healthier environment for fish.

Yes! Water Lettuce is completely safe for fish and beneficial for aquatic ecosystems. Fish often enjoy hiding among the roots, and some species will nibble on the leaves. The plant provides natural shade and breeding areas.

Regular harvesting is key. Remove 30-50% of plants every 2-4 weeks during growing season. You can compost removed plants or share with other aquarists. Limiting nutrients and light will also slow growth if needed.