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Troubleshooting Micra: Common Problems and How to Fix Them Fast

July 05, 2025

Micra (Micranthemum) is a popular foreground plant in aquariums, appreciated for its lush carpet effect. However, it can sometimes face health issues that frustrate aquarists. This troubleshooting guide identifies common Micra problems and offers fast, effective solutions to restore plant health quickly.



1. Yellowing Leaves


Cause: Nutrient deficiency (often nitrogen or iron) or poor lighting.

Fix: Use a balanced liquid fertilizer with micro and macro nutrients. Ensure lighting is moderate to high and consistent for at least 6 hours daily.



2. Melting or Decaying Leaves


Cause: Sudden changes in water parameters or transplant shock.

Fix: Maintain stable water conditions. Trim melted leaves and allow new growth to develop. Avoid drastic temperature or pH shifts.



3. Stunted or Slow Growth


Cause: Insufficient light, low CO₂, or depleted substrate nutrients.

Fix: Increase light intensity, add root tabs if using inert substrate, and consider CO₂ supplementation for faster results—though it’s optional in low-tech tanks.



4. Micra Floating Instead of Rooting


Cause: Loose planting or coarse substrate.

Fix: Plant Micra in small clumps using fine-grain soil. Use aquascaping tweezers for firm placement and gently press the base into the substrate.



5. Algae Growth on Micra


Cause: Excess lighting, poor water circulation, or excess nutrients.

Fix: Reduce lighting to 6–8 hours per day. Perform weekly water changes and introduce algae eaters like shrimp or snails if appropriate.



6. Micra Not Spreading Horizontally


Cause: Vertical growth due to low light or improper trimming.

Fix: Trim regularly to encourage side shoots. Provide evenly distributed light and avoid overshadowing by larger plants.



Conclusion


Micra is resilient when properly cared for, but small issues can quickly escalate. By identifying the cause early and applying these quick fixes, you can maintain a lush, healthy carpet of Micra in your aquarium without stress.



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