If you are looking for an aquarium plant that will surprise you, take a look at Micranthemum Umbrosum. This modest-looking inhabitant of the underwater world has an amazing talent—it is a true master of transformation. Depending on the conditions in your aquarium, it can look completely different, which is why it has been nicknamed the “chameleon.”
It can grow as a delicate light green carpet at the bottom or turn into lush fluffy bushes. In bright light, its leaves become small and dense, and in the shade, they stretch out, becoming more graceful. This plant does not just decorate the aquarium, it lives in harmony with it, changing along with it.
This variability makes Micranthemum interesting for both beginners and experienced aquarists. You can experiment with it to create different underwater landscapes. Let's figure out how to befriend this amazing plant and unlock its full potential in your home aquarium.
Distribution
Micranthemum umbelliferum originally grew in North America, from where it later spread to South America. This plant can be found in almost any freshwater body — in swampy areas, ditches, rivers, and streams, as well as in ponds and lakes.
It is noteworthy that Micranthemum Umbrosum can grow both in the water column and in coastal areas. This plant is mainly found in the tropical and subtropical parts of North and South America.
Growing and care
Micranthemum Umbrosum can be safely called an unpretentious plant, thanks to which it can be grown by both professional aquarists and beginners. It is best to plant it in the middle ground against a backdrop of driftwood and stones. If you want to grow it as a long-stemmed plant rather than using it as a ground cover, it is worth placing Micranthemum Umbrosum in the background of the aquarium.
Unlike many long-stemmed aquatic plants, Micranthemum Umbrosum is suitable for growing in small aquariums. The minimum recommended tank size is 70 liters.
According to experts, shady micranthemum grows very well in a humid greenhouse. And if the plant is partially submerged in water, which is easy to achieve, for example, in a paludarium, micranthemum develops special flower stalks.
Over time, small flowers form on them. Micranthemum umbrosum usually blooms in December and January.
Aquarium design enthusiasts recommend planting Micranthemum umbelliferum next to ferns, Java moss, or Thai moss. Against this backdrop, the plant with its delicate, small leaves will look its best.
Water parameters for ideal maintenance
Micranthemum Umbrosum prefers warm, soft water, like most tropical plants. Experts recommend maintaining the following hydrochemical parameters:
- hardness — 6-7 German degrees;
- acid-alkaline balance — 5-7.5.
A powerful filter must be installed in the aquarium and about a quarter of the water volume must be replaced with fresh water.
Lighting requirements
Shady Micranthemum needs moderate, or even better, bright lighting for 8-10 hours a day. To provide intense light, experts recommend using fluorescent lamps with a power of 0.5 W/l.
As experienced aquarists note, bright lighting often helps the plant survive the move to a new aquarium and successfully acclimatize. If this does not work, it is recommended to check the other conditions of maintenance.
If shaded Micranthemum is placed in an aquarium with a volume of 100 liters or more with good lighting, the plant will quickly spread throughout the free space.
Under good conditions, its stems grow several centimeters in a day. Because of this feature, the plant may need regular trimming. Otherwise, it will fill the entire container.
Soil and substrate requirements
This plant has no special requirements for substrate. Shady Micranthemum can not only be planted in the ground, but also attached to stones and driftwood, or left to float on the surface of the water. In this case, it will create diffused lighting, which is sometimes necessary for other plants or fish living in the aquarium. However, do not forget about some rules:
- from among the nutrient substrates, it is necessary to choose soft and loose soils with a large amount of iron.
- if the plant will receive nutrients from the water, you can use fine gravel—when fixed in this fine-grained “empty” soil, there is less chance of damaging the plant's roots.
- it is advisable to plant Micranthemum tenebrosum in silted soil, which usually forms in old aquariums, but it is important to ensure that the soil does not become acidic, as this will have a negative effect on the plant.
The following nutrient-rich soils can be used for effective cultivation of Micranthemum:
- Tropica Substrate is a nutrient-rich soil based on peat and clay that serves as a good source of nutrients. It contains a large amount of iron, which is especially important for Micranthemum tenebrosum.
- Tetra ActiveSubstrate is a natural clay-based substrate containing iron. According to the manufacturer, one of the functional features of this product is its ability to “collect” excess nutrients from the water in the aquarium and release them back in case of a deficiency.
- Dennerle DeponitMix Professional 9in1 is a nutrient-rich substrate. It should be laid under the main “empty” soil, such as sand, pebbles, or gravel. Clay and peat are used in the manufacture of this substrate, and the substrate contains chelated iron, which is much better absorbed by aquarium plants.
Fertilizer requirements
Micranthemum Umbrosum obtains many nutrients from the water and silt accumulated at the bottom. For good growth of this long-stemmed plant, experts advise adding liquid fertilizers with a high iron content to the aquarium. The following products from well-known brands are suitable:
- Tetra Plant Planta Min is a liquid fertilizer with vitamin B and iodine, designed to nourish green plants. It contains potassium, manganese, and iron. The fertilizer does not contain macronutrients, so it does not have a strong impact on the aquarium ecosystem. It reduces the growth of lower algae.
- Aquarium Leaf Zone is a liquid fertilizer with chelated iron, which is better absorbed by aquatic plants. Use weekly.
- JBL Ferropol — although this liquid fertilizer is black in color, it does not change the color of the water in the aquarium. In addition to iron, it contains manganese, sulfur, cobalt, potassium, and boron. It does not contain phosphates or nitrates.
In addition, to maintain the healthy appearance of the plant, it is necessary to supply carbon dioxide in an amount of 10-15 mg/l. A sufficient concentration of CO2 promotes the development of a lush, strong bush and allows the plant to retain the rich color of its leaves and stems.
Reproduction
Parameter
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Side shoots can be separated or the tops of the stems can be cut off as cuttings. Some aquarists prefer this method because after pinching at the growth point, the stem begins to branch more. The base of the cutting is buried in the soil. Within about a week, it forms its own root system.
Micranthemum umbelliferum is an invisible plant that easily changes its appearance depending on the conditions. In good light, it grows thick and bright, and in the shade, it can become sparse and pale, almost blending into the background. Thanks to this ability, it seems to “dissolve” in the aquarium, creating a natural background or smooth transitions between zones. This makes it a favorite among aquarists who appreciate simplicity, flexibility, and the natural look of the underwater landscape.
Variations and forms of the plant
Three species of Micranthemum are best known in aquarium keeping: Shady, Monte Carlo, and Small Flower. Let's take a closer look at the other two species.
- Micranthemum Monte Carlo. Grows in water bodies in Argentina. Outwardly similar to Hemanthus Cuba, but requires less careful care. It also has a stronger root system. With its help, Micranthemum Monte Carlo is well anchored in the aquarium substrate. This plant looks spectacular in the foreground of a composition. Unlike the shady variety, it requires less intense lighting and a lower concentration of carbon dioxide in the water.
- Micranthemum micranthum. Found in North America in shallow water bodies. The bushes of this micranthemum grow up to 30 cm in height, with 3-4 leaf plates arranged in whorls on the stems. The leaves grow up to 1 cm in length and are attached to the stems without petioles. It prefers warm, soft water and bright lighting.
Micranthemum umbelliferum really deserves the attention of every aquarist, even if you are just starting out. This plant will not only decorate your underwater world, but will also become a living indicator of its condition, reacting sensitively to light and nutrition.
Its main appeal lies in its simplicity and versatility. If you provide bright light, you will get a dense, lush carpet of copper or reddish hues. Reduce the lighting, and the plant will respond with a delicate light green color and more elongated shoots. This allows it to fit into almost any composition, from a Dutch aquarium to a natural biotope.
It is easy to care for if you remember its basic needs: good lighting and nutritious soil. Timely pruning will help form lush and beautiful thickets that will be the perfect shelter for small fish and shrimp.
In conclusion, the shady micranthemum is the perfect companion for creating a lively, dynamic aquarium. It is ready to change along with your ideas, making the process of keeping it truly creative and exciting.
