Japanese spatterdock

Family Nymphaeaceae (water-lily family). Native to Japan. Distributed in the water bodies of the large islands of Japan

Japanese spatterdock is a beautiful ornamental plant. The submerged form has attractive, broad-at-the-base, deeply lobed, arrow-shaped leaves. Coloration is glossy green; in one subspecies it is reddish-brown.

Japanese spatterdock should be kept only in a tropical aquarium with a water temperature no lower than 24 °C. In colder water its growth deteriorates significantly. Water hardness of 6-12° with a reaction close to neutral (pH 6.5-7.5) suits the plant best. A strong water current should not be created in the aquarium. Special attention should be paid to maintaining water cleanliness. Deposition of particles of organic and mineral turbidity on the leaves greatly worsens the spatterdock's condition and causes the death of its delicate leaves. Water changes are desirable 3-4 times per month.

Lighting should be as bright as possible. A single natural daylight entering a room through a window is usually not enough. Diffused sunlight is very beneficial. Artificial supplemental lighting is mandatory. The power of fluorescent lamps should be at least 0.4 per 1 L of aquarium volume. Additional illumination with incandescent lamps is very useful to increase the share of red-orange rays in the spectrum. The photoperiod should be 12-14 hours.

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