Heating and cooling
The right temperature for your aquarium dwellers
Did you know that most tropical waters are “only“ 25 °C, even when the air temperature is above 30 °C? Only large, slow flowing rivers and lakes are an exception because they are less shaded by trees which means they are heated more by the sun. The oceans, of course, are a world of their own.
Thus most fish and plants are most comfortable in your aquarium at 24-26 °C and only a few fish, such as the discus fish prefer temperatures of nearly 30 °C. Many shrimp species on the other hand prefer cooler water and don’t like hot summers at 28 °C water temperature. They do best when small fans are used to cool the water. ( Cooling ).
Aquarium heaters and aquarium coolers
How to heat and cool your aquarium easily and effectively - What temperatures do our aquarium inhabitants have in their natural habitat? What aquarium heaters are there? Rod heater or external heater - which is better? What are the benefits of undergravel heatings in an aquarium? How can you cool the water in summer? We show you all types of heaters, coolers and thermometers and explain the advantages and disadvantages to you
Depending on where you live, your room temperature might be below your desired water temperature. Only in summer and in tropical countries is heating not required. Heater thermostats heat up your water to the pre-set water temperature then switch themselves off. This way your required water temperature is constantly maintained.
An insulation of your aquarium with a foam underlay and possibly also with a thermal insulation on both sides and the rear pane will help you to save energy costs.
As already mentioned there are aquarium dwellers, such as shrimps which prefer lower water temperatures of 22-23 °C and tolerate high temperatures of 28 °C only for a short time. But a lot of tropical fish species and aquarium plants in particular also feel uncomfortable at high temperatures. Plant growth can even stagnate noticeably because of too high a temperature! JBL provides you with an inexpensive and effective cooling solution which you can easily install in your aquarium:
Fan units (various lengths available) create an air flow at the water surface which leads to an evaporation cooling process (similar to your sensitivity to the cold when you ride a bike). This way you can reduce the water temperature by approx. 4 °C. With a thermostat ( JBL PROTEMP CoolControl ) you can have your fans switched on automatically in case your set temperature is being exceeded.
With the help of a water thermometer you can easily see what’s happening to the temperature in your aquarium. You can choose between various versions and a thermometer which you can stick to the outside of the glass pane: Thermometers & hydrometers .