Use a bowl or container that has not been washed with soap, as the residue from many soaps can be harmful to fish. [2] X Research source
If you don’t want to wait for water to age overnight, then it is wise to treat this water with a dechlorinator. These products neutralize the chlorine levels found in most city and municipal water sources. [4] X Research source Make sure the water in this temporary holding tank is the same temperature as the water in the permanent tank. You may also wish to cover this tank with a lid to prevent the fish from jumping out.
When using a fishnet to transfer fish from one container to another, make sure the containers are close together. This will reduce the amount of time the fish is out of the water, thus reducing its stress levels. [7] X Research source Alternatively, you can use a small, clean bowl to transfer your fish. Make sure the bowl does not have soap or soap residue on it and select a rounded bowl with smooth edges. When using this method, simply dunk the small bowl into the fish tank and allow the fish to swim into it. Be patient and don’t chase the fish around its bowl. This could stress the fish out. [8] X Research source
Hyperactivity Changes in the fish’s color “Yawning” at the surface of the water (although some fish, like labyrinth fish, breathe this way) If the water is too cold, your fish may exhibit the following signs: Inactivity Sitting on the bottom Changes in color
If there is a noticeable buildup of lime on your fish bowl, clean it with vinegar then rinse the vinegar out with warm water. [12] X Research source
Again, you may wish to use a dechlorinator rather than waiting overnight for chlorine levels to neutralize. If this is the case, make sure allow the water temperature to equalize before placing the fish back in the tank. [15] X Research source Be sure to cover the water or put it out of reach if you have pets or children. This will help you ensure the water is not contaminated while it is aging.
