Troubleshooting
Rotala nanjenshan problems — and how to fix them
Rotala nanjenshan (Rotala nanjenshan) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Sparse, stretched whorls
Low light loosens and stretches the fine whorls. Increase PAR and confirm CO2 for the tight feathery form.
Pale tips without colour
Orange-pink tips need high light and iron. Boost light and iron dosing while holding nitrate moderate.
Melting in unstable water
Sensitive to abrupt parameter changes. Keep water chemistry and CO2 steady, especially after planting or large water changes.
Fine-leaf algae
Its fine foliage shows algae readily when light outpaces CO2. Improve flow, balance light to CO2, and keep nutrients consistent.
Prevent rotala nanjenshan problems before they start
Most rotala nanjenshan issues are care-mismatch, not bad luck. Dial in the basics:
Looking for rotala nanjenshan in general rather than its problems? Read the full rotala nanjenshan care guide — light, water, soil and feeding.
Rotala nanjenshan problems — FAQ
Why is my rotala nanjenshan sparse, stretched whorls?
Low light loosens and stretches the fine whorls. Increase PAR and confirm CO2 for the tight feathery form.
Why is my rotala nanjenshan pale tips without colour?
Orange-pink tips need high light and iron. Boost light and iron dosing while holding nitrate moderate.
Why is my rotala nanjenshan melting in unstable water?
Sensitive to abrupt parameter changes. Keep water chemistry and CO2 steady, especially after planting or large water changes.
Why is my rotala nanjenshan fine-leaf algae?
Its fine foliage shows algae readily when light outpaces CO2. Improve flow, balance light to CO2, and keep nutrients consistent.