The water temperature in aquariums is of crucial importance for animals and plants and should therefore be monitored. Most tropical ornamental fish are most comfortable at temperatures between 24 and 26 ° C. But there are also fish which prefer lower temperatures. The discus is one of the fish that is happier in higher temperatures between 27 and 29 ° C.
With the help of heater thermostats (JBL ProTemp S) the water temperature can be increased and with coolers (JBL Cooler) it can be lowered.