Clean water tank’s surfacesĪfter moving your fish to a different tank, you should also consider cleaning the tank’s surfaces. You can change 25% of the water in the aquarium, but if the algae has spread too much, consider moving your fish to a temporary water tank as you change the water. To treat your aquarium and get rid of the green water, you need to change the water immediately. Change the water in the aquariumĪlgae is an aquatic plant that can freely float in water. To provide light for your aquarium, change from direct sunlight to supplemental aquarium lighting. Once you realize your aquarium is mass of thick green water, the first step is to remove your aquarium from direct sunlight.Īs mentioned earlier, light facilitates the process of photosynthesis causing the algae to develop even faster. Below are some quick tips on how to get rid of green water in your fish tank: Block out direct sunlight ![]() So, now that you know the causes of green aquarium water, let’s see how to fix it. How to Treat Green Water in Your Aquarium? On the other hand, leaving the water in your aquarium to go for too long, will only mean the water has high levels of nutrients that may lead to a faster development of algae in the aquarium.ĭirty water will turn cloudy and opaque making the aquarium an unsafe environment for your fish to live in. 25% water change every three weeks will ensure all algae, dead matter, dissolved components and organic waste is removed in the water. It is advisable to perform water changes in your aquarium frequently. The dead matter, that will then start to decay, could be the reason why your aquarium has green and cloudy water. If it high or alkaline, then most probably there are many dissolved metals and phosphates in the aquarium.Īn alkaline water tank will also cause the aquatic plants in your aquarium to die. You can test for dissolved components in the water by checking your aquarium’s PH level. Green and cloudy water in the aquarium can also be caused by dissolved components such as metals and phosphates in the water. The organic waste will also act as nutrients for the aquatic plant such as algae that are responsible for the green color in water. Organic waste causes water to turn into a thick soup that is cloudy in nature. Keeping too many fish in your aquarium will lead to excess organic water in the aquarium. Keeping too many fish in the aquariumįollow the recommended number of fish in the size of your aquarium, for instance, there are a number of fish that should be kept in a 5o gallons water tank, depending on the species of the fish or its size. The eaten food will also become waste, causing the aquarium to turn into cloudy water. Food that is left uneaten in the aquarium becomes nutrients that promote growth of algae. ![]() You should only feed your fish food that it will finish within two or three minutes. Most aquarists are advised to feed their fish a pinch of food that is equal to the size of its eye, twice or thrice in a day. The green color can get so dense that it makes the water opaque, making it difficult to see through the water. When algae reproduces too fast, they grow out of control leading to many suspended algae in the water and causing the water to turn into a bright green broth. ![]() The energy form the light causes the algae to reproduce faster. However, excess light, especially direct sunlight, aids water plants such as algae to undergo the process of photosynthesis. Excess lightĮxcess light in the aquarium will not particularly cause the water to turn green in your aquarium. However, the problem occurs when the algae grows out of control causing the water to turn opaque and green that it is hard to see the fish in the aquarium. It can be a source of food for some of your aquatic beings. Some algae in the aquarium is not harmful. Algae may be seen suspended in the aquarium or attached on the aquarium’s walls or the aquarium’s ornaments. Most aquariums, even those kept spotless clean, have some form algae from time to time. Like any other plants, algae is facilitated by light in the process of photosynthesis that promotes its growth. There are over 8,000 species of algae on planet earth, such as filamentous algae or black beard algae.Īlgae are green in colour and will cause water in your aquarium to turn green too. Below you can learn about the causes of green water in new or old fish tanks: AlgaeĪlgae are single celled plants and a type of aquatic plant. ![]() Green aquarium water can be caused by multiple factors. Green Aquarium Water Causes of Green Water in the Aquarium
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