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Solenostoma tetragonum

Solenostoma tetragonum

Solenostoma tetragonum is a very slow-growing aquatic liverwort, highly valued in aquascaping for its unique texture and compact growth habit. Ideal for midground placement, it contributes depth and intricate detail to any aquatic layout.

Taxonomy
Class:Liliopsida
Order:Jungermanniales
Family:Solenostomataceae
Genus:Solenostoma
Species:Solenostoma tetragonum

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Water Temperature

18 - 28 °C

pH Value

4.5 - 7

Water type

Freshwater

Light

Medium to High

CO2

Low - High

Expected height

3 cm

Expected width

5 cm

KH

0 - 7 dKH

Species description

Solenostoma tetragonum, like many aquatic liverworts, typically originates from habitats characterized by cool, clear, and often shaded flowing waters, thriving on moist rocky substrates or submerged wood. Its natural distribution is found in regions where stable environmental conditions and high atmospheric humidity support bryophyte growth. This species prefers well-oxygenated environments with consistent water movement, which helps prevent detritus accumulation and encourages its firm attachment to hardscape. Belonging to the family Solenostomataceae, Solenostoma tetragonum is classified as a liverwort, a group of non-vascular plants representing one of the earliest evolutionary branches of terrestrial flora. Its simple structure, devoid of true stems, leaves, or roots, is characteristic of this botanical group.

Care, breeding and tankmates

Solenostoma tetragonum thrives in a temperature range of 18.0 to 28.0 C, indicating good adaptability but a preference for stable waters without significant fluctuations. The water should be acidic to slightly acidic, with a pH between 4.5 and 7.0, and very soft to moderately soft carbonate hardness (KH) ranging from 0.0 to 7.0. Maintaining these parameters within the recommended values is crucial to prevent stress and melt, ensuring a clean and well-filtered aquatic environment.

Geographic Origin and Distribution

This species originates from: Native.

Origin

South and Southeast Asia

Plant profile

Placement
Midground

Place Solenostoma tetragonum in the midground or background of the aquarium. It needs enough space to avoid shading neighboring species. Proper placement ensures steady light exposure and water flow.

Botanical form
Epiphyte

Solenostoma tetragonum features a distinct structural form with well-defined leaves. Its stem and root structures anchor firmly into the substrate. The overall appearance provides excellent visual texture underwater.

Growth
Very slow

The growth rate of Solenostoma tetragonum is generally moderate under optimal conditions. Adding CO2 injection will significantly accelerate its development. However, it can adapt to slower growth in low-tech setups.

Substrate
None

*Solenostoma tetragonum*, commonly known as Pearl moss, is a creeping liverwort that completely lacks true roots and has no substrate demand. It attaches itself to rocks, driftwood, and other hardscape surfaces using tiny rhizoids, absorbing all necessary nutrients and water directly through its delicate fronds. Planting this moss in soil or burying it will cause it to quickly suffocate and rot. It thrives best when tied or glued to porous surfaces in areas with good water flow, entirely bypassing the need for a substrate layer.

Column fertilization
Required

Liquid fertilization is very beneficial for Solenostoma tetragonum. It absorbs dissolved minerals directly from the water column. Dosing a complete micronutrient fertilizer twice a week is recommended.

Root fertilization
None

A nutrient-rich substrate strongly supports the root system of Solenostoma tetragonum. Adding root tabs near its base provides essential macronutrients. This promotes a stronger base and healthier overall growth.

Trimming
Occasional

Regular trimming keeps Solenostoma tetragonum looking neat and prevents overgrowth. Cut the stems just above a node to encourage branching. Remove any decaying or yellowing leaves to maintain water quality.

Propagation
Cuttings

Propagation of Solenostoma tetragonum is straightforward by taking stem cuttings. Replant the healthy cut portions directly into the substrate. They will develop new roots within a week or two.

Sensitivity
Moderate

Solenostoma tetragonum is somewhat sensitive to sudden fluctuations in water parameters. It prefers stable temperatures and consistent CO2 levels. Algae can grow on its leaves if lighting is too intense.

Layout role
Epiphyte, Nano

Solenostoma tetragonum plays a crucial role in creating depth in an aquascape. Its unique texture contrasts beautifully with fine-leaved plants. It works well as a focal point or a transition plant.

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

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Last updated: 06/16/2026
Solenostoma tetragonum Care Guide & Tank Setup | Atlarium