Scientific Name: Süßwassertang (Lomariopsis lineata prothallium)
Family: Lomariopsidaceae
Description and Requirements
Difficulty: Very Easy / Beginner-friendly
Growth Rate: Slow to Moderate (once established in the environment, its growth rate steadily increases).
Lighting: Low to Medium (Extremely shade-tolerant; under high light it grows very compact but requires mindful algae management).
CO2: Not required (however, supplemental $CO_2$ promotes significantly denser and faster growth structures).
Water Parameters
Temperature: 15°C - 30°C (59°F - 86°F). Highly resilient across a massive temperature spectrum.
pH: 6.0 - 8.0
Hardness (GH): Very soft to hard
Compatibility and Placement
Placement: Foreground or Midground plant. Unlike true aquatic mosses, Süßwassertang lacks rhizoids to anchor itself naturally right away. It should be tied with fishing line, glued using aquarium-safe cyanoacrylate to rocks/driftwood, or left loose on the substrate to form heavy, rolling cushions.
Compatibility: The ultimate sanctuary for dwarf shrimp (Neocaridina and Caridinas) and delicate fry. Its translucent, wavy, ribbon-like structure traps significant amounts of beneficial biofilm and microfauna, providing an endless, safe foraging ground.
Plant Tips & Recommendations
Pro Tip 1: Heavy and Sinks Automatically: A fantastic selling point to feature on your site is that Süßwassertang is denser than water. Unlike true mosses that easily float away and clutter the surface, loose pieces of this plant sink straight to the bottom, making it incredibly easy to manage and shape into natural ground cover.
Pro Tip 2: Effortless Propagation: To propagate or trim, customers simply need to pull or cut a piece away from the main cluster and place it elsewhere. Every single tiny fragment will continue to grow perfectly into a brand new bushy colony.
Pro Tip 3: Handle Alguicides with Care: While exceptionally hardy, it can show temporary melting or browning if subjected to rapid environmental shocks or if liquid carbon/alguicides are dosed directly over its delicate, skin-thin structure.