Water parameters
Temperature20–28°C
pH6–7.5
General hardness (GH)3–15 dGH
Recommended range
Overview
Cryptocoryne spiralis is a long, narrow-leaved crypt native to India. Its leaves are smooth-edged, medium green or slightly brownish, and can grow to 20–40 cm. The name "spiralis" does not describe the leaf shape but the corkscrew-twisted tip of the spathe that surrounds the flower. Once established, it forms dense, grass-like clumps through side runners.
Planting and Placement
It is planted with the roots fully buried and the crown left exposed. Because it feeds through its roots, a nutrient-rich substrate or root tabs placed next to the roots are essential. In medium-sized aquariums it is used in the background or in the corners; plant the clumps 5–6 cm apart.
Care and Fertilization
- Light: Medium; in low light the leaves become thinner and lie down.
- CO₂: Not required, but it speeds up growth.
- Fertilizer: A root tab every 2–3 months.
- Losing its leaves after planting (melting) is normal; do not pull up the roots.
Propagation
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Common Problems
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Hobbyist notes
Things you won't find in books, learned by trial and error. The most helpful ones are on top.
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Change history and contributors
- Page created · October 16, 2026