Monte Carlo (Micranthemum tweediei) — Live Aquarium Plant
Monte Carlo is a popular carpeting plant known for its small, round leaves and bright green appearance. Its low-growing pattern makes it a common choice for foreground coverage, and under proper lighting and CO2, it can form a dense, lush carpet across the substrate.
At a Glance
| Difficulty | Moderate |
|---|---|
| Plant Type | Stem |
| Growth Rate | Fast |
| Lighting | Medium/High |
| Height | 1-2″ |
| CO2 | Recommended |
| Origin | South America |
Why We Like It for Bettas
Monte Carlo’s dense, low carpet fills in the foreground of a tank, providing a natural-looking base that enhances the aesthetic of the aquarium. It offers a stable environment for betta fish by reducing open spaces where debris or algae might accumulate.
FAQ
What is the ideal lighting condition for Monte Carlo?
Monte Carlo thrives under medium to high lighting conditions. Consistent exposure to bright light helps promote healthy growth and dense carpet formation.
How fast does Monte Carlo grow in an aquarium?
Monte Carlo has a fast growth rate, making it ideal for quickly establishing a lush foreground carpet when properly cared for.
Is CO2 necessary for Monte Carlo to grow well?
CO2 is recommended for optimal growth, especially in tanks with high lighting. Without CO2, growth may be slower and the plant may not form a dense carpet.



Fiona Piper –
I’ve had Monte Carlo in my 10-gallon tank for three months. It spreads quickly and creates a beautiful, even carpet at the bottom. My betta fish seems to enjoy the natural look and the plant stays healthy with regular water changes.
Sebastian Hemmings –
The plant arrived alive and looked vibrant. I used it in a medium-light setup with a CO2 system. It grew well and filled the foreground nicely. A bit of pruning is needed every few weeks to keep it dense.
Gordon MacLeod –
Great for beginners who want a low-maintenance carpet plant. It’s fast-growing and stays green even in fluctuating light. I love how it adds depth to my tank without needing much space.