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PlanthardFreshwater

Alternanthera Reineckii Pink

Alternanthera reineckii Pink

Also known as AR Pink, Pink Scarlet Temple

Plantae›Tracheophyta›Magnoliopsida›Caryophyllales›Amaranthaceae

Alternanthera reineckii Pink is a vibrant stem plant prized for its striking pink to red coloration on the undersides of its leaves, which intensifies under high light. This medium-sized plant features narrow, lance-shaped leaves and a bushy growth habit, making it ideal for creating colorful midground focal points in planted aquariums.

Where it's from

Native to Argentina Northeast, Argentina Northwest, Bolivia, Brazil North, Brazil Northeast, Brazil South and 4 more

At a glance

CO₂: required
Growth: Medium
Placement: midground
Temp: 72–82°F; 22–28°C
pH: 6.0-7.5
GH: 36–143 ppm; 2–8 dGH

Ammonia 0 ppm and nitrate under 20 ppm.

Compatible livestock

See all 6

Red Cherry Shrimp

Small, peaceful, and will not uproot or damage delicate stems

excellent

Amano Shrimp

Algae control without plant damage; compatible with stem plants

excellent

Cardinal Tetra

Peaceful schooling fish that won't disturb roots or stems

good

Otocinclus

Gentle algae eater that grazes without harming healthy plant tissue

good

Rotala Butterfly

Complementary stem plant for cohesive aquascaping

excellent

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Common diseases 4Melt / Transition Shock, Iron Deficiency (Chlorosis), Algae Overgrowth on Leaves, Nutrient Deficiency (Macronutrient)

Melt / Transition Shock

Symptoms

Leaves become translucent, mushy, or fall off rapidly after planting; stems may rot at substrate line

Treatment

Ensure stable water parameters (pH, temperature, hardness); maintain high CO2 and lighting; trim affected portions and replant healthy stems; be patient as plant acclimates over 2-4 weeks

Iron Deficiency (Chlorosis)

Symptoms

New leaves emerge pale yellow or white while veins remain green; older leaves unaffected; pink coloration fades

Treatment

Dose liquid iron fertilizer (chelated form) 2-3 times weekly; ensure adequate micronutrient supplementation; check that CO2 and macronutrients are not limiting

Algae Overgrowth on Leaves

Symptoms

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

Treatment

Increase water circulation and reduce photoperiod to 8-10 hours daily; manually remove algae with soft brush; introduce algae-eating shrimp; ensure phosphate and nitrate are not excessively high

Nutrient Deficiency (Macronutrient)

Symptoms

Stunted growth; yellowing of older leaves; weak or thin stems; poor pink coloration development

Treatment

Dose comprehensive liquid fertilizer containing nitrogen, phosphorus, and potassium; use root tabs for sustained nutrient delivery; maintain consistent dosing schedule; test water and adjust based on plant response

Legality

No state or federal restrictions on record.

Not legal advice, and possibly incomplete or out of date. Rules vary by state and change over time; check with your state wildlife or agriculture agency before buying, keeping or shipping it.

The care information here is written with AI help, so it can contain mistakes. Spot one? Tell us and we'll fix it. Native range: The World Checklist of Vascular Plants (WCVP) (CC BY 4.0).