Heat – one of the most common problems with aquariums – can completely destroy your freshwater or marine aquarium environment and the life inside it. Not only is this excess heat related to the outside temperature, but it also greatly affected by the many lighting mechanisms and pumps used in aquariums. Aquarium Chillers are devices that will keep destruction from high temperatures from happening by controlling the temperature of the tank water even in the harshest conditions.
Aquarium Chillers come in two different forms – the drop-in and the inline. Both have the same purpose and result; they just work differently. A drop-in aquarium chiller sits next to the tank or sump and feeds coolant into the water, while an inline chiller processes internally water that is fed to it by the pump. You will also need a temperature controller to operate the chiller. Prices for these chillers range from around a hundred dollars to nearly a thousand.