Cryptocoryne balansae

Quick facts

Max height

50 cm

Growth rate

moderate

Difficulty

intermediate

Placement

background

Propagation

runners

Water parameters

Temperature

22–28°C

pH

6.5 to 8.5

Hardness

6 to 20 dGH

Light and nutrients

Lighting

medium

CO2

not required, but boosts growth and color

Substrate

nutrient rich

Feeding

feeds from both water column and roots (liquid ferts plus root tabs)

Substrate

What this plant roots into (or attaches to). The substrate affects both plant nutrition and water chemistry; see each linked page for full effects.

This plant feeds primarily from the water column, so substrate choice matters more for its fish-tank compatibility than for plant nutrition.

With fish

Plant-eating fish

safe with plant-eating fish (tough leaves or unpalatable)

Diggers (corydoras, loaches)

may get uprooted by active diggers

Root-disturbing fish

sensitive to root disturbance, plant where roots stay undisturbed

Habitat

Native to flowing streams and rivers in Thailand, Vietnam, Laos, and southern China. The species (Cryptocoryne balansae, also traded as C. crispatula var. balansae) produces long, narrow, strap-like leaves with distinctively ruffled or hammered margins. Mature leaves can reach 30–50 cm long but only 1–3 cm wide, creating a graceful, flowing effect in current. The hammered texture of the leaf margins is the key visual feature: the crinkled surface catches light at varying angles and adds visual depth that flat-leaved plants cannot match. This is one of the larger Cryptocoryne species and works best as a background plant in tanks of 100 L where the long leaves have room to reach their full length. The species was first described from specimens collected in Vietnam and has been in the aquarium trade since the mid-20th century. It belongs to the C. crispatula complex, a group of related narrow-leaved Cryptocorynes from mainland Southeast Asia.

Care notes

A moderate-care Cryptocoryne suited to the background of planted tanks. Plant the root crown at substrate level with roots buried in nutrient-rich substrate or positioned near root tabs. Like all Cryptocorynes, this species is primarily a root feeder and performs poorly in inert, unfertilized gravel. Moderate light is ideal; the long leaves stretch toward the surface under low light, while higher light keeps growth more compact. CO2 is not required but accelerates growth and produces fuller, healthier leaf production. The ruffled leaf margins look their best in gentle current from a filter outlet, where they wave and shimmer attractively. Susceptible to crypt melt when moved to a new tank or when water parameters change suddenly: leaves may dissolve partially or completely over a few days. This is alarming but not fatal. The root system survives, and new leaves adapted to the current conditions emerge within 2-4 weeks. Never discard a melted Cryptocoryne if the roots are still firm and white. Growth rate once established is moderate, producing roughly one new leaf every 1-2 weeks per plant. Propagation by runners: the plant sends out underground stolons that produce daughter plants 5–15 cm away. A single specimen can colonize a 30 cm stretch of background over 6-12 months. Temperature: 22–28°C. pH 6.0-7.5 preferred; tolerates up to 8.0.

Further reading

• How to cycle a fish tank
• Water chemistry for fishkeepers: pH, GH, KH, and what they mean