Its job in your tank: root feeder, lawn.
A green lawn that plants itself.
Broadleaf Chain Sword (Helanthium bolivianum ‘Quadricostatus’, sold for years as Echinodorus quadricostatus) sends out runners and fills in on its own. Each runner makes new plantlets until you have a dense, grassy lawn about 4–6 inches tall.
The problem
Most “carpet” plants in stores need CO2, high light and bottled fertilizers to spread, and they melt away in a low-tech tank. Chain sword feeds through its roots, so it spreads in a soil-based tank with ordinary light.
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 artificial inputs.
| Plant Name | Scientific Name | Growth Height | Spreading Method |
|---|---|---|---|
| Broadleaf Chain Sword | Helanthium bolivianum ‘Quadricostatus’ | 4–6 inches | Runners and plantlets |
FAQ
Does this plant require CO2 for growth?
No, Broadleaf Chain Sword does not require CO2. It feeds through its roots and thrives in soil-based tanks with ordinary lighting.
How fast does it spread in a tank?
It spreads gradually through runners that produce new plantlets. It forms a dense lawn over time with consistent care.
Is it suitable for low-tech aquariums?
Yes, it is ideal for low-tech setups. It grows well with standard lighting and does not need additional fertilizers or CO2.
Austin Terry –
This plant has transformed my tank into a lush green carpet. I didn’t need to buy any extra fertilizers or set up CO2. It just grows on its own and fills the substrate nicely.
Ella Oliver –
After adding the chain sword, my tank looks much more natural. The runners spread evenly and the plant stays healthy even with low light and no added nutrients.
Ella Duncan –
It grows well in my soil-based tank. I noticed new plantlets forming after a few weeks. A simple, effective plant for beginners.
Ruth Paige –
I was skeptical about low-tech plants, but this one works perfectly. No CO2, no special lighting—just a few weeks and I have a full lawn.