Troubleshooting
Dwarf Anubias problems — and how to fix them
Dwarf Anubias (Anubias nana) 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.
Green spot algae on leaves
Hard green spots on the slow-growing leaves are caused by excess light or phosphate imbalance. Reduce lighting duration, add nerite snails (effective grazers of this algae type), and ensure phosphate levels are balanced relative to nitrate.
Rhizome rot from burial
The most common beginner error: burying the rhizome causes crown rot within weeks. The rhizome must remain fully exposed, attached above the substrate. Cut away any soft brown tissue back to firm growth and re-attach the healthy portion.
Very slow or stalled growth
Anubias nana is naturally slow, producing one leaf every 2–4 weeks in good conditions. Extremely slow growth (one leaf per 2+ months) may indicate very low light, low temperature below 20°C, or nutrient deficiency. Add trace element fertiliser and check temperature.
Prevent dwarf anubias problems before they start
Most dwarf anubias issues are care-mismatch, not bad luck. Dial in the basics:
Dwarf Anubias problems — FAQ
Why is my dwarf anubias green spot algae on leaves?
Hard green spots on the slow-growing leaves are caused by excess light or phosphate imbalance. Reduce lighting duration, add nerite snails (effective grazers of this algae type), and ensure phosphate levels are balanced relative to nitrate.
Why is my dwarf anubias rhizome rot from burial?
The most common beginner error: burying the rhizome causes crown rot within weeks. The rhizome must remain fully exposed, attached above the substrate. Cut away any soft brown tissue back to firm growth and re-attach the healthy portion.
Why is my dwarf anubias very slow or stalled growth?
Anubias nana is naturally slow, producing one leaf every 2–4 weeks in good conditions. Extremely slow growth (one leaf per 2+ months) may indicate very low light, low temperature below 20°C, or nutrient deficiency. Add trace element fertiliser and check temperature.