Aquarium Heater Filter
Best Aquarium Heater: The Ultimate Guide in 2020 … We’ll take a look at what the different types are and how you work out which is the best type of heater for your aquarium. The five main types of heaters are immersible, submersible, substrate, in-line and filter. Hanging/Immersible Heater. An immersible heater is also known…