Java Moss

Environment

It tolerates a very wide range of conditions: temperature from 18 to 30 °C and pH from 5.5 to 8.0, in soft to moderately hard water. It thrives in almost any aquarium, including shrimp tanks and breeding tanks. Clean water limits debris accumulation in its fronds.

Feeding

Very undemanding plant: low to medium light is sufficient, with no CO2 injection necessary. It does not need substrate as it attaches to surfaces; secure it to a rock or driftwood with thread or aquarium-safe glue. Light liquid fertilization accelerates its growth but remains optional.

Health & common diseases

Java moss is very hardy, but can suffer from nutrient deficiencies (yellowing, browning) if the water is too poor or lighting insufficient. Filamentous algae or cyanobacteria can invade it in case of imbalance (excess light, high nitrates/phosphates). To prevent these problems, maintain clean water with regular changes, moderate lighting (6-8h/day), and trim damaged or algae-colonized parts.

Tips & tankmates

Trim it regularly with scissors to maintain a compact shape and prevent it from trapping too much detritus. Under too strong light, it may become covered with algae: reduce the lighting accordingly. It offers ideal shelter for fry and newborn shrimp.

Sources