What happens when you never clean your fish tank?

1. Ammonia buildup: Fish excrete ammonia as a waste product, and high levels of ammonia in the water can be toxic to fish. Ammonia levels should be kept between 0 and 0.25 parts per million (ppm) to ensure the health of your fish. Ammonia buildup is a common problem that can lead to fish death if not addressed.

2. Nitrite buildup: Nitrite is a harmful compound that is produced by the breakdown of ammonia by nitrifying bacteria. High levels of nitrite can also be toxic to fish, and should be kept below 0.5 ppm to ensure their health.

3. Nitrate buildup: Nitrate is the final product of the nitrogen cycle, and while it is less toxic to fish than ammonia and nitrite, it should also be kept below 20 ppm to ensure the best water quality for your fish.

4. Reduced oxygen levels: When organic matter, such as fish waste and uneaten food, accumulates in the fish tank, it starts to decompose and use up oxygen in the water. This can lead to hypoxia, which is a condition where the water does not have enough oxygen for the fish to breathe, which can cause them to suffocate.

5. Increased stress: Poor water quality can cause fish to become stressed, which can make them more susceptible to diseases. Stress can also cause fish to behave abnormally and may lead to aggression and territorial disputes.

6. Illness and disease: Poor water quality can lead to a number of health problems for fish, including bacterial infections, fungal infections, and parasites. Sick or diseased fish can also spread diseases to other fish in the tank, making it important to maintain good water quality to prevent the spread of illness.

7. Algae growth: Dirty fish tanks are a breeding ground for algae, which can make the tank unsightly and can also impact water quality by competing with plants for nutrients and releasing toxins. Algae growth can be controlled by regular water changes, proper filtration, and limiting the amount of light that reaches the tank.

8. Cloudy water: Cloudy water is a common problem in dirty fish tanks and is often caused by a buildup of bacteria, algae, or other particles. Cloudy water can be cleared up by performing regular water changes and cleaning the tank, as well as by using a filter with an activated carbon filter.

9. Foul odor: A dirty fish tank can produce a foul odor due to the accumulation of waste products and organic matter. This can be unpleasant for both fish and humans, and it can also be a sign of poor water quality. Regular cleaning and water changes can help to eliminate foul odors.

Overall, it is crucial to clean your fish tank regularly, usually every 1-2 weeks for small tanks, to ensure the health and well-being of your fish. By maintaining good water quality, you can prevent a range of problems and ensure that your fish have a comfortable and healthy environment to thrive in.