This submersible heater is suitable for tiny betta aquariums, which need a heater due to the bigger water temperature necessities of betta fish. The power of little aquarium heaters is calculated in watts and the upper the wattage, the more effective the heater. As an example, a 50 W heater https://beginner-aquarium-checkli50369.azzablog.com/37742328/the-aquarium-filter-guide-uae-diaries