How often should you change the water in your aquarium

1. Bacteria Build-Up
   If your water has too much bacteria in it, then it can start causing problems. If you don’t clean your aquarium enough, then you can end up with too much bacteria. If this happens, then your fish will become sick. So if you want to keep your water as clean as possible, then you need to clean it regularly.
   Changing your aquarium water is crucial. Even if your water looks clear, particles of food and waste are still present. This causes a buildup of material inside the aquarium. These items then convert into nitrogen and phosphates. Nitrate and phosphates are toxic for fish and can cause illness. Your fish’s water needs to be clean but not sterile. Goodbacteria are needed in the water to maintain the health of your fish.
2. Corrosion
   Corrosion is a common problem with aquariums. And if you don’t watch out, then it can lead to serious damage. Corrosion is caused by the build-up of chemicals. When the water is not cleaned often, then it will build up over time. This can lead to some very serious problems.
3. Fish Problems
   One of the most common reasons why you should change your water is that it could cause problems for your fish. If your water isn’t changed often, then your fish may not be able to get the oxygen they need. This can make them sick, and it can also lead to a decrease in their metabolism. So if you want to keep your fish happy, then you should clean your aquarium at least once every week.

• Use a dechlorinator before before filling your tank with fresh water
• For a smaller aquarium, change out 10%-15% of the water weekly (each week)
• For a big tank, change 20% of the water weekly (each week)
• Allow the tap water to sit for at least three days if you use it
• Test the water quality daily to ensure pH level is in norm
• It is important to maintain proper salinity if you have a saltwater tank

There isn’t any reason to remove the fish during the water change. It’s best to keep your fish in the fish tank when you clean your aquarium. If you remove them, they will become stressed by being suddenly removed from their normal environment, and you run the risk of accidentally harming them. You don’t need to remove/change all the water to clean your fish tank properly. You just need to make sure to remove enough water to get the job done.

You need to use a gravel cleaner or stir the gravel during the water change.

You should keep an eye on the water and pH levels in your tank.