Water Sprite ‘Laceleaf’ (Ceratopteris thalictroides) – Fast-Growing Aquatic Fern, Plant or Float
Its job in your tank: nutrient sponge, planted or floated.
Lacy green cover that grows almost as fast as you can trim it.
Water Sprite (Ceratopteris thalictroides), also called Indian fern, is a true aquatic fern with finely divided, lace-like fronds up to 12+ inches. Plant it or float it, and it fills space fast.
The problem
A new tank looks bare, and fry and shrimp have nowhere to hide. Fast plants that need fertilizer dosing defeat the point of a low-tech tank.
How it fits the Father Fish Method
Father Fish has kept fish for more than 70 years, and his method has helped thousands of aquarists build tanks that run on biology instead of bottles. A layer of living soil sits under a sand cap and feeds rooted plants.
| Feature | Detail |
|---|---|
| Plant Type | Aquatic fern |
| Scientific Name | Ceratopteris thalictroides |
| Size | Up to 12+ inches |
| Growth Rate | Fast-growing, requires regular trimming |
| Usage | Planted or floated |
| Role in Tank | Provides cover, absorbs nutrients |
FAQ
Can I plant Water Sprite ‘Laceleaf’ directly in the substrate?
Yes, you can plant it directly in the substrate. It grows well when rooted and helps establish a natural nutrient cycle in the tank.
Does Water Sprite require any special fertilizers?
No, Water Sprite is a self-sustaining plant and does not require regular fertilizer dosing, making it ideal for low-tech aquarium setups.
How often should I trim the fronds?
Trim the fronds every 2 to 4 weeks to maintain a healthy growth pattern and prevent overcrowding.
Julian Knox –
I added Water Sprite ‘Laceleaf’ to my 10-gallon tank and it grew within a week. The fronds spread quickly and gave my fry and shrimp a safe place to hide. No fertilizer needed, which fits my low-tech setup perfectly.
Colin Pullman –
Great for beginners. I floated it at first and saw it grow into a dense green cover. It’s easy to maintain and doesn’t need any special care beyond occasional trimming.
Stewart Dowd –
The plant grows fast and adds a nice green texture to the tank. I planted it in the substrate and it’s now covering the back corner. A bit more trimming than expected, but worth it for the coverage.
Carol Black –
Perfect for a new tank. It fills empty spaces and provides hiding spots for shrimp. I didn’t have to add any fertilizers, and it thrives in the natural conditions of my aquarium.