Um pouco de teoria

Bem pessoal...vocês já viram a C. parva... agora vamos ver um pouco de teoria, a la Kasselmann*

Cryptocoryne parva
Family: araceae
Synonyms: C. nevillii sensu auct., non Hook.
Distribution: Central Sri Lanka
Description: Marsh plant, up to 10cm tall, leaves 1-6(-10cm)petiolate. Blade narrow elliptical to lanceolate, entire, emersed 1.5-2.5cm long, 0.4-0.8cm wide, submersed up to 2cm long, 0,2-0,3cm wide, smooth, medium to dark green. Apex acute; base cuneate. Indistinct venation.
(..)
Culture: Cryptocoryne parva is the smallest Cryptocoryne. The species featues a good adaptability to cultivation conditions. Even thought it counts among the rather slow growing plants, it has enjoyed great popularity for many years because of its unproblematic cultivation. Soft water, as found in the natural locations, is not necessary for cultivation because C. parva also tolerates hard tap water with pH-values within alkalin range. Washed sand is adequate as substrate. In a bright place within the aquarium, the leaves will spread horizontally, in shady places they will, in turn, develop more up-right. (...)
Ecology: The species growns as a marsh plant in dense communities on the banks of fast-moving rivers. Even thought C. parva has often been collected, only Horst (1986), who located the species together with C. x willisii in Mahawelli-Ganga, has published a water analysis; temperature 26oC, GH/KH 0,7 dh, pH 6.8, Fe 0,1mg/l as well as many other trace elements. The substrate was loamy, the location sunny and only occasionally slightly shaded.

Só para desmistificar um pouco: 1) quem disse que essa planta é rápida?:) Nunca presenciei isso..por um tempo, pensei que tava fazendo alguma coisa errada, mas vários amigos meus falaram o mesmo..e agora Kasselmann confirmou. 2) Não necessariamente cryptos 'adoram pH baixo', como tanta gente adora falar... 3) Não necessariamente cryptos gostam de sombra. No próprio habitat natural delas, elas sao encontradas, na maioria, em lugares bem iluminados

Espero que tenham gostado :)

Abraços

* Christel Kasselmann, Aquarium plants. p. 210