Water parameters
Temperature20–28°C
pH6–7.5
General hardness (GH)2–15 dGH
Recommended range
Overview
'Rosanervig' is a colorful form selected from the well-known Hygrophila polysperma. The leaves take on pink, orangey or reddish tones, and whitish-pink veins stand out clearly on them; the name "Sunset hygro" also comes from these colors. It largely keeps the hardiness of the parent species, but grows a little more slowly. The pattern and color become distinct in strong light; in weak light the leaves turn greenish.
Planting and Placement
- Stems are planted one by one, 3 cm apart and 3–4 cm deep.
- It is used in the midground or background in clusters of 5–7 stems as a color accent among green plants.
Care and Fertilization
- Light: Medium; the color and vein pattern become distinct in strong light.
- CO₂: Not required, but beneficial.
- Fertilizer: Iron supplementation supports the color; regular liquid fertilizer is recommended.
- Trimming: Cut from the top; the cut tops are replanted. As with the parent species, do not leave broken-off pieces floating; trimmings must not be dumped into the wild.
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