Cultivar
This Echinodorus hybrid is a recommendable aquarium plant, which is also known as Echinodorus 'Rubin' var. lancifolius and E. 'Rubin' "Schmalblättrig". It is also mistakenly sold under the name "Echinodorus horemanii 'Red'", whereas the real "horemanii Red" has apparently become rare in the trade.
Echinodorus 'Rubin Narrow Leaf' is similar to the cultivar 'Rubin', but remains smaller and narrower-leaved overall. The younger underwater leaves are intensely ruby red and transparent, with light-coloured veins. Older leaves take on brown-olive tones.
Under water, the plant develops a rosette about 25 - 40 cm wide and 20 - 35 cm high, consisting of many elongated-lanceolate, curved leaves that are about 2 - 2.5 cm wide. The leaf edges are often bent towards the underside.
Like many other sword plants, Echinodorus 'Rubin Narrow Leaf' is not very demanding and grows in soft to hard water with pH values between 6 - 9, but is grateful for a nutrient-rich substrate. The addition of CO2 is not a must, but is very favourable for growth. The most favourable temperatures are between 20 and 28 °C. The plant develops its most beautiful colouring in a bright, unshaded position.
This rather narrow-leaved Echinodorus cultivar with its moderate growth height fits well in medium-sized aquariums. As an accent in the middle ground, it contrasts particularly well with light to medium green plants with its red-brown to ruby-red tones.
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[widget=aquaticplants/echinodorus-rubin-narrow-leaf]Echinodorus 'Rubin Narrow Leaf'[/widget]