Java moss is one of the easiest to grow, and hardy, aquarium plants around.
It belongs to the Hypnaceae family and is native to Southeast Asia. It is very common in moist tropical climates and grows on rocks, river banks and tree trunks.
Due to its low requirements regarding water quality and lighting, it is perhaps the most common moss amongst freshwater aquarists and is widely available both in shops and online.
It is commonly used for aquascaping and can produce beautiful results. It also has many other benefits such as providing protection for eggs and fry, improving tank health and providing food for breeding fish.
Category Rating
Care Level: Very easy
Growth Rate: Low to Bright
Temperature: 15 to 30C (59-86F)
PH: 5.0 to 8.0
Reference: https://www.fishkeepingworld.com/java-moss/
Portion Size: 5x5cm when laid out flat which equates to 2-2.5 grams weight (without excess water)