Rhizome Rot (Anubias Disease)

The Floating Perfect Leaf

The most jarring and heartbreaking symptom: you look at the tank and notice perfectly green, healthy, unblemished leaves detached and floating freely at the surface. They have fallen off the stem cleanly, as if cut by a laser.

Mushy Putrid Stem

When you inspect the main rhizome stalk, it is no longer hard, green, and fleshy. It has turned into a black or dark-brown, soft, mushy paste. Pressing it with your fingernail causes it to squish instantly, and it gives off a powerful, foul smell of rot.

The Floating Perfect Leaf

The most jarring and heartbreaking symptom: you look at the tank and notice perfectly green, healthy, unblemished leaves detached and floating freely at the surface. They have fallen off the stem cleanly, as if cut by a laser.

Mushy Putrid Stem

When you inspect the main rhizome stalk, it is no longer hard, green, and fleshy. It has turned into a black or dark-brown, soft, mushy paste. Pressing it with your fingernail causes it to squish instantly, and it gives off a powerful, foul smell of rot.

Epiphytes like Anubias, Bucephalandra, and Java Ferns possess a thick, crawling stem called a rhizome. This rhizome is their lifeline. Rhizome rot is a catastrophic, bacterial tissue-eating disease (often driven by Erwinia or Pseudomonas species). It rapidly destroys the vascular tissue in a matter of days and is highly contagious to other epiphytes in the water column.

Compare sign distribution, leaf age, mechanical damage, emersed-to-submersed adaptation, algae, pests and multiple concurrent deficiencies.

Confirm with a photographic timeline, repeated measurements and one controlled change at a time; an isolated leaf sign does not automatically identify the cause.

Stabilize light, CO₂, temperature and water quality; remove only decaying tissue. Avoid concentrated corrections or several simultaneous changes.

1. Radical Surgery

You cannot fertilize your way out of this. Remove the plant immediately. Using a sterilized, razor-sharp surgical scalpel or fresh razor blade, slice away the rotting section. Keep cutting further down the stem until you hit 100% hard, firm, perfectly white tissue with zero brown streaks. If you leave even 1mm of rot, the disease will continue. Throw away all rotted material.

2. Disinfectant Dip

Dip the surviving healthy white rhizome piece into a mild 3% Hydrogen Peroxide bath for 30 seconds to kill any residual surface bacteria, rinse it, and then attach it back to hardscape in high flow.

NEVER bury the rhizome of any epiphyte. Always attach them to driftwood or rocks using superglue (cyanoacrylate gel) or cotton thread so they remain high up in the water column's flow. Always propagate using ultra-sharp stainless steel aquascaping scissors to create clean, surgical cuts.

NEVER bury the rhizome of any epiphyte. Always attach them to driftwood or rocks using superglue (cyanoacrylate gel) or cotton thread so they remain high up in the water column's flow. Always propagate using ultra-sharp stainless steel aquascaping scissors to create clean, surgical cuts.

Escalate if deterioration is rapid, involves the rhizome or stem, produces foul odor, or coincides with animal distress or detectable ammonia/nitrite.