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Nutrient Substrates for freshwater aquarium
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Aquarium Nutrient Substrate: The Secret to a Lush Aquarium
Why is substrate essential in aquarium keeping?
If you dream of a lush aquarium where plants grow in abundance, nutrient substrate is a must . A true underwater soil, it constitutes the essential basis for optimal growth of aquatic plants. Enriched with nutrients , trace elements and vitamins, it stimulates root development and promotes solid rooting.
A good nutrient soil ensures your plants a continuous supply of essential elements over several years. In other words, it plays a key role in the stability and health of your aquarium. More than just a soil, it is a real ally for a balanced ecosystem.
How does a nutrient substrate work?
Aquatic plants absorb nutrients in two ways:
- By the leaves : useful, but insufficient for optimal development.
- Through the roots : the most effective method, especially for young plants.
This is where the nutrient substrate comes into play. It contains elements such as peat, calcium and humus , which nourish the roots and ensure vigorous growth. A well-chosen soil allows your plants to absorb the CO2 and minerals necessary for their development.
Nutrient substrate or technical soil: which to choose?
Be careful not to confuse! The nutrient substrate is only used to feed the plants and does not modify the water parameters. Conversely, a technical soil influences the pH and KH , which can be crucial for certain species of fish or invertebrates.
If your goal is a heavily planted aquarium or aquascaping , then nutrient substrate is the ideal choice . On the other hand, if you have sensitive species that require specific water, turn to technical soil.
Which nutrient substrate should you choose for your aquarium?
There are several well-known brands such as Tropica , ADA , JBL, Seachem or Dennerle . The choice will depend primarily on your aquatic project. If you use Tropica fertilizers , for example, opting for a substrate of the same brand may be a good idea, as the products are designed to work together.
Another important criterion: the volume of substrate needed . To estimate the ideal quantity, use this simple formula:
Length (cm) x width (cm) x desired thickness (cm) / 1000 = volume in liters.
Example: for a 180L aquarium measuring 101x41 cm, with a thickness of 2 cm of nutrient substrate:
101 x 41 x 2 / 1000 = 8.2 kilos of substrate.
How to properly install your nutrient substrate?
- Add a 2-4 cm layer of nutrient substrate to the bottom of the aquarium.
- Cover it with a layer of sand or gravel to prevent it from mixing with water.
- Remember to rinse the sand or gravel well before placing it to avoid introducing impurities.
- Plant your plants and let the nitrogen cycle take place before adding your fish.
Why is the substrate an ally for the balance of the aquarium?
A stable aquarium is one where plants and fish live together in perfect harmony . In addition to promoting plant growth, the nutrient substrate plays an essential role in the natural filtration of water.
Good bacteria colonize the soil and help break down waste, reducing nitrate and nitrite levels. The result? Cleaner water, improved balance, and healthier fish.
Consider supplementing with liquid fertilizer
Even with a good nutrient substrate, a little extra help can make a difference. Using a liquid fertilizer provides additional nutrients to the plants through the leaves. Combined with a CO2 system , it optimizes their growth and shine.