Vodokras ruwa

Frog watercress, sunan kimiyya Hydrocharis morsus-ranae. Tsiron ya fito ne daga Turai da sassan Asiya. Yana tsirowa a cikin gaɓar ruwa, kamar tafkuna da fadama, da kuma cikin kwanciyar hankali na koguna. An gabatar da shi zuwa Arewacin Amurka a cikin 1930s. Bayan da ya bazu cikin sauri a cikin raƙuman ruwa na nahiyar, ta fara yin barazana ga bambancin halittu na gida. Ana amfani da shi musamman a cikin tafkuna, amma ba a cika samunsa ba a cikin kifayen ruwa, galibi a cikin aquariums na biotope.

A zahiri kama da ƙananan lilies na ruwa. Ganyen ganye suna da siffar m, kusan 6 cm a diamita, mai yawa zuwa taɓawa, tare da daraja mai zurfi a wurin haɗe-haɗe na petiole. Ganyayyaki suna cikin matsayi na ƙasa, an tattara su a cikin rosette daga tushe wanda babban bunch na tushen ruwa ke tsiro, a matsayin mai mulkin, ba sa isa ƙasa. A cikin yanayi mai dumi, yana fure da ƙananan furanni masu launin furanni masu furanni uku.

Mafi kyawun yanayin girma ana ɗaukar su dumi, ɗan acidic, mai laushi (pH da dGH) ruwa tare da babban matakin haske. Ma'adinai abun da ke ciki na ƙasa ba kome. A cikin babban akwatin kifaye ko tafki tare da ingantaccen tsarin yanayin halitta, ba a buƙatar gabatarwar kayan ado na sama ba. Yana da kyau a tuna cewa a cikin ƙaramin ƙarar ruwa, Frog Vodokras, lokacin girma, zai mamaye sararin samaniya da sauri. A cikin akwatin kifaye, wannan na iya haifar da rushewar musayar iskar gas da bushewar wasu tsire-tsire, waɗanda ba za su iya yin haske sosai ba.