Alternanthera Lilacina

Alternanthera lilacina

📍 South America

Alternanthera lilacina is a vibrant stem plant prized for its striking purple-to-lilac coloration on the undersides of its leaves, which intensifies under high light. It features narrow, lance-shaped leaves and a compact growth habit, making it ideal for creating colorful midground focal points in planted aquariums.

Tank Mates

Amano Shrimp

Non-destructive algae eaters that won't uproot or damage stems

excellent

Ember Tetra

Small, peaceful fish that won't disturb plant roots or stems

excellent

Dwarf Gourami

Peaceful mid-water swimmer that coexists well with stem plants

good

Otocinclus

Algae-eating bottom dweller that won't damage plant tissue

excellent

Red Cherry Shrimp

Gentle foragers that help control algae without harming plants

excellent

Common Diseases

Melt / Transition Shock

Symptoms

Leaves become translucent, mushy, or dissolve within days of planting; stems soften and collapse

Treatment

Ensure gradual acclimation to tank conditions; maintain stable water parameters; increase light and CO2 gradually; trim affected portions and allow new growth

Iron Deficiency

Symptoms

Yellowing of new leaves while veins remain green (interveinal chlorosis); stunted growth; pale coloration loss

Treatment

Dose liquid iron fertilizer (chelated iron) 1-2x weekly; ensure adequate lighting and CO2 to support nutrient uptake; check pH (iron availability decreases above pH 7.5)

Algae Overgrowth on Leaves

Symptoms

Green or brown algae coating leaf surfaces; reduced photosynthesis; plant appears dull

Treatment

Increase water flow around plant; reduce photoperiod to 8-10 hours; perform manual removal; add algae-eating fauna (Amano shrimp, Otocinclus); reduce excess nutrients

Nutrient Deficiency (Macronutrient)

Symptoms

Slow growth; pale or yellowing leaves; weak stems; loss of purple coloration

Treatment

Dose comprehensive liquid fertilizer containing NPK; add root tabs if using inert substrate; ensure adequate lighting and CO2 to maximize nutrient utilization

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Quick Facts

co2: recommended
lighting: high
placement: midground
substrate: Root feeder; benefits from nutrient-rich aquasoil or gravel with fertilizer tabs; regular liquid fertilization recommended
growth rate: medium