Cryptocoryne spiralis "Red" is a striking variety of Cryptocoryne, known for its unique, elongated leaves that take on a reddish hue under the right conditions. This plant, particularly popularized by ADA Amano aquascapes, is often used for its bold coloration and texture, making it a great choice for mid-ground or background placements in aquascapes.
Key Features:
- Common Name: Cryptocoryne spiralis "Red"
- Scientific Name: Cryptocoryne spiralis
- Family: Araceae
- Origin: Native to India, though the "Red" variant is a cultivated form.
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Growth Form:
- It is a rosette plant, meaning it grows from a central point with leaves spiraling outwards.
- The leaves can grow long and narrow, with a slightly twisting or spiraling shape, hence the name "spiralis."
Appearance:
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Leaves:
- The plant's leaves are long, thin, and sword-like, often reaching heights of 12 to 24 inches (30-60 cm).
- What makes this variety stand out is the reddish-brown coloration on its leaves, which can range from greenish-red to deep burgundy, depending on the light and nutrient levels.
- The underside of the leaves often displays more intense red tones, adding contrast in the tank.
- Rhizome: Like other Cryptocoryne species, it has a rhizome that stores nutrients and allows the plant to send up new leaves.
Growth and Care:
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Lighting:
- Cryptocoryne spiralis "Red" thrives in low to medium lighting, but higher light can bring out its red hues more vividly. However, it is important not to overdo the light, as Crypts generally do not require intense lighting.
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CO2:
- While CO2 injection is not necessary, adding CO2 can enhance growth and intensify the plant's red coloration. Without CO2, it will still grow well but at a slower rate.
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Water Parameters:
- Temperature: 20°C to 28°C (68°F to 82°F)
- pH: 6.0 to 7.5 — Prefers slightly acidic to neutral water conditions.
- Water Hardness: Soft to moderately hard water.
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Substrate:
- Cryptocoryne spiralis "Red" thrives in a nutrient-rich substrate, as it is a heavy root feeder. Substrates like ADA Aqua Soil or the use of root tabs will promote healthy growth.
