June 18, 2010, Newsletter Issue #140: Cryptocoryne
Tip of the Week
Cryptocoryne (most species)
Shocks on transplant, takes up to months to adjust to new tank, so don´t move them once you´ve planted them. Crypt rot caused by sudden water chemistry/quality changes. Spreads by rhizome; new plants develop at nodes. Not a good beginner plant. Often sold potted in rockwool, which reduces the above shocks. Usually prefers acidic water. Some species will not tolerate high light. Requires iron fertilization and likes rich substrate. Often-seen species:
1. affinis: emerald-green 4-12" leaves, red undersides. Foreground plant in large aquariums or center plants in small tanks. Grows OK in alkaline water.
2. balansae: likes higher light?
3. becketii: likes higher light?
4. lutea: easier crypt to grow.
5. walkeri
6. wendtii: easier crypt to grow. bronze, red, green varieties. wrinkled leaves. Up to 8"
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