
The Alternanthera Reineckii ‘Mini’ (AR Mini) is a popular choice among aquarium enthusiasts who desire a touch of vibrant red in their aquascape. Despite its exotic appearance, this plant isn’t too difficult to grow, making it a great choice for both beginners and experts. Here’s a detailed guide on how to care for this beautiful addition to your aquatic garden.
Introduction to Alternanthera Reineckii ‘Mini’
AR Mini is a compact, dwarf variety of Alternanthera Reineckii, known for its vibrant red-violet leaves. Native to South America, this plant can grow up to 6 inches, creating a beautiful, dense carpet or a colorful accent to mid-ground or background, depending on your aquascape design.

Lighting
AR Mini thrives under medium to high light conditions. Adequate lighting is crucial as it helps the plant achieve its beautiful red coloration. Lower light conditions can result in slower growth and less vibrant colors.
Water Conditions
AR Mini prefers slightly acidic water, with a pH of 6.0-7.0. Water hardness should be within the range of 3-12 dKH. The ideal water temperature is between 72°F and 82°F.
Substrate and Fertilizer
This plant needs nutrient-rich substrate as it feeds heavily through its roots. Commercially available planted tank substrates that are rich in iron and other essential nutrients work best.
While a nutrient-rich substrate is a must, additional fertilization can help promote growth and the rich coloration of AR Mini. Regular dosing of a comprehensive, aquarium-safe fertilizer can be beneficial.
CO2 Supplementation
Although AR Mini can survive without added CO2, to truly thrive and show vibrant colors, it benefits from CO2 supplementation. If you want a dense, vibrant red carpet, adding CO2 to your tank can make a significant difference.
Propagation
Propagating AR Mini is straightforward. Simply cut off a side shoot or stem from the mature plant and replant it into the substrate. Make sure the cuttings are getting enough nutrients from the water and substrate for optimal growth.
Pruning
To maintain a dense carpet effect, regular pruning is necessary. Trim the top of the stems and replant for a denser growth. This plant responds well to trimming and will grow back fuller each time.
Conclusion
Alternanthera Reineckii ‘Mini’ is an excellent plant for anyone looking to add some vibrant colors to their aquarium. With its easy care and eye-catching appearance, it’s no wonder why this plant is such a hit in the aquascaping world. With the right conditions and care, your AR Mini will reward you with a stunning crimson accent that breathes life into any underwater landscape. Happy aquascaping!