How big is ? The 500w heating rod is suitable for the fish tank with a length of 1 meter, and the volume is generally about 300 liters. Heating rods are usually only needed when raising tropical fish. Eurythermal fish are more adaptable to water temperature, such as goldfish and koi. They can survive in the environment of 5-30 C. However, keeping the water warm with heating rods is also helpful for the digestion and growth of fish.
without a heating rod? 1. Goldfish: Goldfish is one of the common ornamental fish. It is evolved from crucian carp. It has a wide range of temperature adaptation, so it can be raised without a heating rod. This kind of fish has a mild temperament and a life span of about 6 years. At the same time, its feeding habits are miscellaneous, so it is easy to raise.
2. Koi: The appearance of Koi is very beautiful, the color is also very bright, and the pattern is not regular, it looks very characteristic, and it is very ornamental. This kind of fish has a mild nature, likes to swim in groups, and is easy to raise, and has a strong ability to adapt to temperature, so it can be raised without heating rods.
3,: Also known as mirror fish, is a small freshwater fish, its feeding habits are more miscellaneous, mainly living in places where the current is slow, the range of activities is relatively small. This kind of fish has a strong ability to adapt to temperature, so it does not need higher temperature to feed.
