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PlanthardFreshwater

Alternanthera Reineckii Purple

Alternanthera reineckii Purple

📍 South America

Ask Finn

Alternanthera reineckii Purple is a vibrant stem plant prized for its deep purple to reddish coloration on the undersides of its narrow, lance-shaped leaves. This mid-ground plant exhibits striking color intensity under high lighting and CO2 supplementation, making it a popular choice for aquascapers seeking dramatic visual contrast. Its compact growth habit and vivid hues make it ideal for creating focal points in planted aquariums.

Common Diseases

Melt / Transition Shock

Symptoms

Leaves become translucent, mushy, or dissolve; stems turn soft and collapse

Treatment

Ensure stable water parameters (pH, temperature, hardness); gradually acclimate plant to new tank conditions; maintain high CO2 and lighting; trim affected portions and allow new growth

Iron Deficiency (Chlorosis)

Symptoms

Yellowing of new leaves while veins remain green; stunted growth; pale coloration instead of vibrant purple

Treatment

Dose liquid iron fertilizer (chelated iron) 2-3 times weekly; ensure adequate lighting and CO2 to support nutrient uptake; check that substrate contains iron-rich components

Algae Overgrowth on Leaves

Symptoms

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

Treatment

Increase water circulation and reduce photoperiod to 8-10 hours daily; add algae-eating fauna (Amano shrimp, Otocinclus); manually remove affected leaves; maintain nutrient balance to prevent algae blooms

Nutrient Deficiency (Macros/Micros)

Symptoms

Slow or stunted growth; pale or yellowing leaves; loss of purple coloration; leaf curling or deformation

Treatment

Dose comprehensive fertilizer containing NPK and trace elements (iron, boron, manganese) 2-3 times weekly; perform 30-50% water changes weekly to replenish nutrients; ensure substrate fertility

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Quick Facts

co2
required
lighting
high
placement
midground
substrate
Root feeder; benefits from nutrient-rich aquasoil or gravel with regular fertilization (macros and micros); can also absorb nutrients from water column
growth rate
medium

Water it likes

ph
6.0-7.5
ammonia
0 ppm
nitrate
<20 ppm
hardness
2-8 dGH
temperature
72–82°F (22–28°C)

Stats

Community tips0
Growing in0 tanks