Tim's Tropical Fish

SW Saltwater Home

SW Galleries

SW Care



Saltwater Aquarium Temperature

Water Quality

Saltwater Aquarium Temperature for saltwater tanks is similar to freshwater ranges. The water should be between 75 F to 82 F (24 C - 28 C).  Fish will survive for short periods in temperates between 70 F and 85 F (21 C - 29 C).  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.