1. PH: The traffic light fish is a kind of fish that prefers a slightly acidic environment and is suitable for living in water with a PH value between 5.8 and 6.8. If the water is too alkaline, they will grow poorly.
2. Softness and hardness: They prefer soft water to hard water. If the water contains a large number of calcium compounds or magnesium compounds, it will have a negative impact on their growth.
3. Water temperature: Because they are tropical fish, they prefer relatively warm water to cold water. It is suggested that the water temperature should be controlled between 22 and 26 degrees Celsius.
There are two main choices for the water used to raise the traffic light fish. One is distilled water, which contains no impurities and is very suitable for fish growth. But the cost is high, so it is not recommended. The second is the tap water that has been dried in the sun. This water is easier to obtain and less expensive, so it is more recommended.
As mentioned above, traffic light fish can be raised with tap water. However, we must use the tap water that has been dried in the sun, not the tap water that has just come out. This is because the water temperature of the tap water will rise slightly, and the chlorine in it will volatilize. This makes it more suitable for fish to grow. If they are fed with tap water containing chlorine, it will lead to poor growth.
