Hemianthus Cuba (HC Cuba)

Hemianthus Cuba aquarium plant — universally
known as HC Cuba — is the most famous and
most sought-after foreground carpet plant
in the entire freshwater aquarium hobby.
This hemianthus cuba aquarium plant produces
impossibly tiny round bright green leaves
on delicate creeping stems that spread
naturally — creating a stunningly beautiful
dense bright green carpet that gives any
aquascape an extraordinary sense of natural
depth and scale that defines the nature
aquarium style worldwide.

Growing a successful HC Cuba carpet is
considered one of the most rewarding
achievements in the aquarium hobby.
The result — a perfect bright green lawn
in the foreground of your planted tank —
is breathtakingly beautiful and worth
every moment of careful cultivation and
patient dedicated aquarium management.

What is Hemianthus Cuba Aquarium Plant?

Hemianthus Callitrichoides var. Cuba is native
to Cuba where it was first discovered in clear
shallow streams near Havana. It is one of the
smallest-leaved aquarium plants commercially
available — each tiny leaf measuring barely
1 millimetre. This unique tiny leaf size makes
it perfect for creating a perfectly scaled
natural carpet that gives any aquascape an
extraordinary sense of expansive natural
landscape even in a relatively small tank.

Why Choose Hemianthus Cuba Aquarium Plant?

🌿 World’s most famous foreground carpet —
the pinnacle of planted tank aquascaping
🌿 Impossibly tiny bright green round leaves
create extraordinary natural carpet effect
🌿 Creates stunning sense of depth and scale
in any planted tank aquascape layout
🌿 Rewards patience with breathtakingly
beautiful professional-looking carpet results
🌿 The foreground plant of choice for
competition aquascapes worldwide
🌿 Self-spreading under ideal conditions —
fills foreground area naturally over time

How to Plant Hemianthus Cuba

Divide into very small portions of 3 to 5
plants and push into fine aquasoil or sand
2 centimetres apart across the entire foreground.
Under high lighting with CO2 the plant spreads
rapidly filling gaps within 3 to 5 weeks.
Trim regularly to maintain flat carpet height
and prevent upward growth toward the light.

Important Care Notes for HC Cuba

This hemianthus cuba aquarium plant requires
careful attention. CO2 injection is strongly
recommended for reliable carpet growth. High
lighting is essential — under low light the
plant grows upward rather than spreading as
a flat carpet. Fine aquasoil substrate and
stable water parameters are essential for
maintaining a healthy dense carpet long-term.

Perfect Plant Combinations

HC Cuba creates a spectacular foreground beneath
Anubias Nana
on driftwood and pairs magnificently with
Java Moss
on rocks at the carpet edges. Browse our
foreground plant collection.
For more information visit
Fishkeeping World and
Aquatic Plant Central.

Frequently Asked Questions

Q: Does HC Cuba need CO2?
A: CO2 injection is strongly recommended for
reliable carpet establishment. Without CO2
HC Cuba tends to grow upward rather than
spreading as a flat dense carpet in the tank.

Q: Is HC Cuba suitable for beginners?
A: HC Cuba is an advanced plant. For beginners
we recommend starting with Micranthemum Monte
Carlo or Pearl Weed as more forgiving and
accessible carpet plant alternatives first.

Q: Why is my HC Cuba growing upward?
A: Insufficient lighting or lack of CO2.
Increase light intensity and add CO2 to
encourage horizontal carpet spreading growth
instead of vertical upward reaching growth.

Q: What is the best substrate for HC Cuba?
A: Fine aquasoil gives the best results by
far. The nutrient-rich fine substrate provides
ideal rooting conditions for the plant’s
delicate creeping stems and runners.

Q: How long does HC Cuba take to carpet?
A: With CO2 and high lighting approximately
4 to 6 weeks. Without CO2 under high light
approximately 8 to 12 weeks for full coverage.

Care Details

🌱 Care Level: Advanced
💡 Lighting: High
💧 CO2: Strongly recommended
📍 Placement: Foreground Carpet
🌡️ Temperature: 20°C – 26°C
⚗️ pH: 5.5 – 7.0
💪 Growth Rate: Moderate with CO2

Every Hemianthus Cuba aquarium plant from
FloraBiz is farm-grown in clean healthy
cultivation tanks in Kozhikode, Kerala and
shipped fresh directly to your doorstep
anywhere in India with our live plant
delivery guarantee.