Ceratopteris Thalictroides - Water Sprite

Ceratopteris thalictroides

Fast-Growing Water Sprite – Rooted or Floating

Ceratopteris thalictroides, commonly known as Water Sprite, is a highly versatile and fast-growing aquatic fern prized for its finely divided, lace-like leaves and exceptional nutrient-absorbing ability. It can be grown rooted in substrate or left floating, making it one of the best plants for improving water quality, reducing nitrates, and providing cover for fry and shrimp. Its rapid growth and forgiving nature make it ideal for beginners, breeding tanks, and high-bioload aquariums.

🌱 Key Features

• Delicate, fern-like bright green leaves

• Can be grown rooted or floating

• Extremely fast growth under good conditions

• Excellent nitrate and ammonia absorber

• Provides dense shelter for fry and shrimp

⚙️ Optimal Aquarium Parameters

Difficulty: Easy
Growth Rate: Fast
Placement: Background (rooted) or Floating

🌡️ Water Parameters

• Temperature: 20–30 °C (68–86 °F)

• pH: 5.5–7.8

• GH: 1–12 dGH

• KH: 0–6 dKH

• TDS: ~80–250 ppm

💡 Lighting

• Requirement: Low to High

• Medium to high light produces denser, more compact foliage

• Floating plants require slightly stronger light due to surface shading

💨 CO₂

• Not Required

• CO₂ supplementation accelerates growth and leaf density

🌿 Nutrients

• Primarily water-column feeder

• Regular macro and micronutrient dosing recommended

• Rapid growth may require increased nitrate and potassium availability

✂️ Care & Maintenance

• Trim regularly to prevent shading of other plants

• Easily propagated by plantlets forming on older leaves

• Avoid strong surface agitation if grown floating