Saltwater Aquariums - Temperature

Water temperature for saltwater tanks is similar to freshwater ranges. The water should be between 75ºF to 82ºF (24ºC - 28ºC).  Fish will survive for short periods in temperates between 70ºF and 85ºF (21ºC - 29ºC).  Low temperatures can cause some bacterial diseases such as saltwater ich to flourish.  Temperature variation will cause stress and promote disease, so it’s important to have a good heater or a chiller to keep the temperature stable within the acceptable range.  The decline of coral reefs has been associated with temperature changes of only a couple of degrees. Coral generally turns white and dies under temperature change.

Tropical fish and aquarium information about saltwater species, fish care, fish facts, compatibility and aquarium maintenance.