The aquarium floating plants They are extraordinary natural elements that serve multiple functions within any domestic aquatic environment. They not only add aesthetic value and naturalness to the aquatic environment, but also contribute to the balance of the ecosystem, helping to keep the water clean, oxygenated, and free of excess nutrients. This article is a complete guide to the most popular types of floating plants for aquariums, the recommended species, the specific benefits they provide, the necessary care and precautions to take, as well as the most notable experiences of hobbyists using these fascinating plants.
What are floating aquarium plants?
The aquarium floating plants They are aquatic plants that grow on the surface of the water, staying afloat on their own without needing to be anchored to the substrate. Their leaves and roots hang over the water, allowing them to capture nutrients directly from the aquatic environment and actively participate in the absorption of compounds such as nitrates, phosphates and other substances that may be harmful in high concentrations.
Main benefits of floating plants in aquariums
Integrating floating plants into your aquarium offers multiple advantages both for the balance of the ecosystem and for the well-being of its inhabitants:
- Efficient absorption of nutrients: These plants remove excess nitrates, phosphates and other substances from the water, helping to prevent algae growth.
- Natural oxygenation of water: Although to a lesser extent than other submerged plants, floating plants also contribute to the production of oxygen through photosynthesis.
- They provide shade: By partially covering the surface, they regulate the amount of light that enters the aquarium, which benefits species that prefer less illuminated environments.
- They generate natural shelters: Its hanging roots and surface vegetation provide ideal hiding places for fry, shrimp and shy fish.
- Stress reduction in fishMany fish feel safer under the cover of these plants, as it simulates their natural habitat.
- They help control temperature: The shade they provide can slightly reduce the temperature in aquariums exposed to intense heat sources.
Most popular species of floating plants for aquariums
There are numerous species of floating plants suitable for both freshwater and saltwater aquariums, although the most widespread and appreciated by hobbyists are usually found in freshwater aquariums. The main varieties and their characteristics are detailed below.
Limnobium laevigatum
El Limnobium laevigatum It is considered one of the best options for beginners. It has a round leaf of tonality light green and the reverse is paler, making it especially attractive. It reproduces very easily, quickly forming a dense green carpet on the surface.
- Requires little lighting, although it is sensitive to changes in light: at lower intensity, it produces larger leaves.
- Helps absorb nutrients and is especially suitable for aquariums with Betta fish or others that like shaded waters.
- Grows well in slow-moving waters, making it ideal for low-current aquariums or snail tanks.
Salvinia natans
La Salvinia natans It is a small aquatic plant, with dark green scraped leaf and a characteristic cleft in the center. Its growth is rather medium to slow, and it is more appropriate for intermediate or advanced hobbyists due to its specific care requirements.
- Compact size, ideal for small aquariums or as a refuge for fry.
- It prefers moderate light and does not tolerate strong currents well.
- It stands out for its ability to help eliminate algae, competing for the same nutrients.
Phyllanthus
Known as the red floating plant, Phyllanthus It's relatively new to the aquarium world, but it has established itself as one of the most striking thanks to its ability to acquire reddish, orange, or pink hues under good lighting and an appropriate photoperiod. It features a rounded leaf with a pronounced central vein and a velvety surface.
- It withstands different light intensities well, although under optimal conditions it reveals its unique coloration.
- Long and thin roots which provide hiding places for small fish and shrimp.
- Fast growth, ideal for controlling nutrients in the water.
Riccia fluitans
La Riccia fluitans It's a very versatile floating plant, capable of thriving in a variety of lighting and temperature conditions. It can be left to float freely or anchored with thread to form submerged carpets.
- Widely used in aquascaping to create natural underwater landscapes.
- It can grow densely, providing enormous benefits as a shelter and natural filter.
Salvinia annoyed
La Salvinia annoyed It is a very effective floating plant for reducing algae growth, as it absorbs large amounts of nutrients. It is excellent for providing shelter and shade.
- Very durable, ideal for beginners and aquariums of all types.
- Fast growing in warm, well-lit environments.
Diadema variegata
La Diadema variegata It is a less popular but very hardy option, able to thrive in both clear and turbid waters.
- Ideal for aquariums with frequent variations in water quality.
- Easy to maintain and highly tolerant of adverse conditions.
Ceratophyllum demersum
Better known as "foxtail", the Ceratophyllum demersum It can be used as a floating or submerged plant. It is very effective at absorbing nutrients and keeping the water clean of toxic substances.
- Ideal for breeding aquariums and large installations.
- It does not require anchoring or substrate, making it very versatile.
Care and requirements for success with floating plants
To ensure that floating plants thrive in your aquarium, it is essential to address certain aspects related to water conditions, lighting, and maintenance:
- Automotive Lighting Although many species tolerate low light levels, a photoperiod of around 8 hours per day promotes optimal growth. Too much light can trigger excessive growth but can also force some species to develop smaller leaves and more intense colors.
- water parameters: Stable pH values ​​between 6,4 and 7,2, GH between 3 and 8 and KH between 1 and 4 are usually ideal for most floating plant species.
- Temperature: Most thrive between 12°C and 25°C, although some species can tolerate slightly wider ranges.
- water circulationIt's best to avoid strong surface currents, as they can sink or damage floating plants. If your filter generates too much current, you can install floating barriers.
- Pruning and control: Due to their rapid growth, it is advisable to periodically remove excess plants to prevent them from covering the entire surface and depriving the rest of the aquarium vegetation of light.
- Health check-up: Regularly inspect the leaves for pests, fungi, or algae. If you detect problems, remove the affected leaves immediately.
- Do not mix too many floating species: Combining them can create an unsightly and uneven appearance on the water surface.
Experiences and practical recommendations from amateurs
Experienced users often share valuable observations about managing floating plants in different types of aquariums:
- In small aquariums (less than 20 liters) and snail tanks, species such as Limnobium laevigatum They stand out for their aesthetics and resistance, but they need to be fenced to prevent the current from sinking them.
- In large installations where water flow is intense, it is advisable to use floating barriers to "enclose" plants in calm areas, ensuring they remain healthy and providing shade only where desired.
- It is especially recommended for "Low Tech" aquariums (low light and nutrient demand), both for its vigor and its ability to limit algae growth and maintain ecological balance.
- Prevent uncontrolled proliferation of floating debris by regularly removing excess debris to allow gas exchange and prevent suffocation of other aquarium inhabitants.
Precautions and possible drawbacks
While the benefits of floating plants are numerous, there are certain precautions that are important to consider to avoid problems in the aquarium:
- Vegetation overloadCovering the entire surface can cause oxygen depletion, affecting the health of the fish. It's essential to maintain a balance and allow adequate light to enter.
- Compatibility with other inhabitants: Some species of fish can feed on the roots or leaves of these plants, preventing their proper proliferation.
- growth control: Its expansion capacity can be excessive in small aquariums, clogging filters or heating devices and causing circulation problems.
- Water quality review: Although they absorb nutrients, if they decompose they can release organic matter which, in excess, produces the opposite effect to the desired one, increasing pollutants.
Additional recommendations for use
To ensure the best results when using floating plants in your home aquarium, follow these tips:
- Adapt the choice of plants to your aquarium: Adapt the floating plant species to the specific needs and parameters of your installation and to the preferences of your fish or invertebrates.
- Plan the placement: Use floating hoops or barriers to limit the space dedicated to these plants, preventing them from invading the entire surface and allowing light to reach the submerged plants.
- Integrate the floats with logs and decoration: They help recreate more natural ecosystems, especially in Amazonian or jungle biotope aquariums.
- Avoid over-fertilizing: Although they absorb nutrients, an excess can saturate the capacity of floating plants and cause imbalances.
- Monitor the status of the roots: Long roots are a perfect refuge for fry, but do not let them cover the entire surface of the water.
Frequently asked questions about using floating plants
- Are they suitable for any type of aquarium?
Most freshwater floating species adapt to all types of aquariums, provided their proliferation is controlled and their basic water and lighting parameters are respected. - Do you need fertilizer?
Generally, they obtain nutrients directly from the water, although in very clean tanks with low nutrient levels, it may be advisable to add a specific liquid fertilizer. - Can they live with big fish?
Yes, but there are fish like certain cichlids or carp that can eat or damage the leaves and roots, so it may be necessary to replace them more frequently. - How do you control them if they grow too much?
Periodically remove excess plants to keep the surface free and allow sufficient light to pass through.
Incorporation floating plants in the aquarium It's a decision that offers aesthetic, ecological, and biological benefits. From the simplest species for beginners to exotic and colorful ones for the most demanding, there's a perfect option for every type of aquarist. These plants, in addition to acting as a natural barrier against excess nutrients and algae, create a more natural and healthy habitat for fish, shrimp, and other inhabitants. By following the recommendations on care, selection, and growth control, you can enjoy the visual and functional effect of a vibrant, stable, and life-filled aquarium thanks to these wonderful floating plants.
