Is algea good for aquariums
An overview of the causes of thread algae
The reasons for an excessive supply of nutrients are of course not only due to excessively polluted tap water. Light intensity, duration of lighting, planting, fish stocking and feeding also influence the nutrient balance. Finding the exact cause therefore requires a little bit of detective work for the aquarist. As already mentioned, the three water values nitrate, CO2 and phosphate provide decisive approaches in the search for the reasons for the algae infestation. An increase in a value is usually triggered by the following errors or changes.
Is the nitrate level too high?
- The tap water is too heavily contaminated with nitrate. If the water is changed extensively, too much nitrate gets into the aquarium.
- Fish are fed too often: The excess of unused fish feed and the increased excretion of the fish (the more feed is consumed, the more feed is naturally excreted) can increase the nitrate content in the water.
- The Fish stock in the aquarium is too high: The more fish in the tank, the more excretions and the more nitrate gets into the water.
The CO2 value is too high?
- The Aquarium is too bright: The lighting time is too long or the location of the aquarium is incorrect (e.g. too much sunlight).
- The Vegetation is not optimal: There are not enough plants in the tank or they have been thinned out too much. Instead of fast-growing plants, there are primarily slow-growing plants such as Anubias or Java fern in the aquarium.
The phosphate level is too high?
- The tap water is too rich in phosphate.
- Plants were fertilized too much: Many fertilizers for aquarium plants contain phosphate.
- The Food contains phosphate. Many types of dry or frozen food contain phosphate, which can be particularly problematic in the event of overfeeding.
By the way: Not only an oversupply, but also a lack of nutrients can trigger increased algae growth in your aquarium. Is the CO2 content in the water too low this has a negative effect on plant growth, which in turn benefits the resilient algae. A CO2 value that is too low can usually be traced back to an insufficient supply of light, for example from a lamp that is too weak or a lighting duration that is too short, or to incorrect vegetation (plants that are growing too slowly).
Also read our articles on the most popular ornamental fish for your aquarium!
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