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Regular Water Changes

This is one of the basic maintenance activities that should be carried out in an aquarium. In aquariums, harmful substances or compounds can accumulate due to the breakdown of organic waste, fertilization, and excretion of animal feces, leading to potential overgrowth of algae. Partial water changes are aimed at removing excess water and help maintain parameters at levels suitable for the health of fish and plants. Changing water once a week helps systematically manage freshwater aquariums, control parameters, and fertilize.

  • Regular water changes are closely related to other activities for keeping the aquarium clean. We change water weekly to improve water quality parameters, remove dirty tank water partially and replace it with fresh water, and eliminate debris from plants or fish.
  • It's crucial to turn off the heater and filter before changing the water. The amount of water change depends on the current condition of the tank and should be between 20-50%. In case of algae issues, use larger changes, and if there are no problems with the aquarium, fish, and plants are happy, a water change in the range of 30% is sufficient. For new aquariums, due to nitrogen cycling, water changes should be more substantial and even more frequent.
  • Changing water is not just draining and refilling. The glass of the aquarium should be thoroughly cleaned of algae before starting such an operation. Algae floating in the aquarium water after such an operation will be removed with the water poured out of the aquarium.
Another caring activity performed during water changes is siphoning out the sludge from the bottom. During this, you should vacuum the bottom of the tank, removing sludge, feces, and plant debris. For the substrate of plants or shrimp, a small-diameter hose (9-12 or 12-16 mm) can work well. When draining the tank water, it must be shaken vigorously at the bottom, causing the dirt to stick to the bottom and be sucked in by the hose.

In aquariums with a large number of plants, they are trimmed during water changes, meaning they are shortened and shaped. Floating plant fragments in the water should be sucked out during water changes.

If we change water with tap water, it's likely that the evaporated water leaves calcium-magnesium deposits, i.e., limescale, on the aquarium glass at the water's edge. During water changes, it can be mechanically removed first with a razor blade and then wiped off with a tissue soaked in vinegar, perfectly removing the stains.

After each water change, remember to use appropriate water conditioners to neutralize substances that may harm your fish, such as heavy metals, ammonia, and chlorine. Additionally, it's recommended to supplement beneficial bacteria to the tank water to ensure the purity of the water.

Developing a habit of regular water changes will help you deal with many issues and improve the conditions of fish, plants, and water quality in the aquarium. Besides changing the aquarium water, you can also remove pollutants present in the aquarium water, such as fish feces, while supporting filtration. If you want to learn more about aquarium filtration and filter media, we are happy to show you our Aquarium Filtration Guide.

It's worth mentioning that many fish found in our aquariums react very positively to this freshwater, often starting to spawn. As you can see, regular water changes are necessary for live plants, fish, and general water chemistry. Many aquarium owners say that this activity is crucial for establishing a balanced aquarium ecosystem, and they might be right. Regular water changes certainly bring you clean water and happy aquarium residents.

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Every aquarium hobbyist wants to create and maintain a good living environment and maximize the quality of life for their aquarium friends – and Seaoura has the same beliefs and values. The brand Seaoura was registered on Jul 7th, 2018. And ever since then, we have been dedicated to making aquarium products. Our headquarter is located in the most economically active city Shenzhen. We also have Seaoura warehouse office in the United States. Seaoura positions itself as a brand that offers high quality products at an affordable price. It pursues innovation, pays attention to detail and the user experience. Seaoura prides itself on understanding what aquarium hobbyists want and need. It has earned the trust of fish-hobbyists and continued to develop and grow since 2018. We are going to stay true to this principle – it is our core tenet. Over 10 years’experience of aquarium products, we have established our own unique advantages in aquarium equipment. Now we are vigorously developing the market in the Western Europe, North America, Southeast Asia, Australia, Japan, and more other countries and areas. We have a wide range of aquarium products including but not limited to aquarium light, water pump, fish tank, internal filter, canister filter, air pump, aquarium heater, aquarium plastic plants, fish tank decorations, air stone, gravel cleaner, filter brush, bio-ball, sponge filter and so on. Seaoura is committed to making fish keeping easier and more enjoyable. And Seaoura will keep on providing more innovative and high-quality aquarium products for aquatic hobbyists.
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