Scientific Name: Riccia fluitans
Common Name: Crystalwort
Origin: Cosmopolitan (found worldwide)
Growth Rate: Fast
Difficulty Level: Moderate
Temperature: 20–28°C
pH: 6.0–7.5
GH: 2–12 dGH
KH: 0–8 dKH
Moderate to high lighting is recommended.
Under strong light, Riccia develops a bright green, dense appearance.
Low light may result in loose, less compact growth.
CO₂ supplementation is highly beneficial.
Promotes compact growth, faster spreading, and vibrant coloration.
Can survive without CO₂ but growth may become sparse and less attractive.
Benefits from regular dosing of macro and micronutrients.
Absorbs nutrients directly from the water column.
Iron and trace elements help maintain healthy green coloration.
Foreground carpet (when attached to mesh, stones, or driftwood).
Floating plant in nature.
Frequently used in Nature Aquariums and Aquascapes to create lush green accents.
Easily propagated by dividing the plant into smaller portions.
Small fragments readily develop into new colonies.
Requires frequent trimming to prevent lower layers from dying due to lack of light.
Attach securely using mesh, fishing line, or thread when used as a carpet.
Loose fragments can spread throughout the aquarium if not maintained.
Provides excellent shelter for shrimp fry and small fish.
Riccia fluitans is prized for creating bright green cushions and carpeting effects in planted aquariums. With high light, CO₂, and proper nutrient supplementation, it forms dense, attractive mats that add texture and depth to aquascapes.
