Heaters & temperature
Aquarium heaters by wattage and tank size, reliable thermometers and cooling fans for summer. How many watts you need and how to avoid accidents.
3 comparisons
heaters & temperature comparisons
Aquarium heaters A heater keeps the water steady at the 75-80 °F (24-27 °C) most tropical fish need. The goal isn't the most powerful heater, but the right one for your tank size and your room. See comparison → 
Aquarium thermometers A thermometer is the cheapest piece of aquarium gear and one of the most important: it's the only way to know whether your heater is doing its job. Here's which type to choose and how accurate it needs to be. See comparison → 
Aquarium cooling fans During a heatwave, tank water can climb past 86 °F (30 °C) within days. A clip-on fan is the cheapest and most effective way to drop it 4-7 °F (2-4 °C) without buying a chiller. See comparison → Best sellers right now
Aquarium heaters Tetra HT Submersible Aquarium Heater With Electronic…
8.2 AcuarioSano rating: 8.2 out of 10
Aquarium thermometers AQUANEAT Aquarium Thermometer, Fish Tank Thermometer, Digital…
8.2 AcuarioSano rating: 8.2 out of 10
Aquarium cooling fans DaToo Aquarium Chiller Fish Tank Fan Aquarium Cooling Fan, 1 Yr…
7.4 AcuarioSano rating: 7.4 out of 10