Email Sign-Up Go to Shopping Cart (0)
Drs. Foster and Smith Pet Supplies

Free Shipping on orders over $49

Customer Service

Factors That Affect Water Temperature

Drs. Foster & Smith Educational Staff
Fish Medication Selection Guide 
Cancer in Fish: Feeding for the Cure 
Factors That Affect Water Temperature 
Fish Health & Nutrition
Seachem Garlic Guard
Seachem Garlic Guard
As low as $5.97
New Era Grazer Foods
New Era Grazer Foods
As low as $11.99
Garlic Boost Plus
Garlic Boost Plus
As low as $12.99
Factors That Affect Water Temperature
Factors That Affect Water Temperature
Temperature can be the single most important component in the life of your fish. Fish, in the wild and in our aquariums, are very sensitive to changes in temperature and a sudden shift can send their immune system into shock.

Eheim Jager Thermostat Heater A major component of temperature control is your heating unit. Choose your heater based on the size of your aquarium using 3-5 watts per gallon as a guide. Each heater can only raise the temperature of the aquarium a certain number of degrees. If the ambient temperature of the aquarium's room is colder than normal, 3-5 watts per gallon may not be sufficient to maintain the temperature your fish need.

In the summer, you may actually need to turn the heater down or off or even add a chiller. Whatever you do, remember that if you change the temperature of a tank, do it slowly. Since day and night time house temperatures during the spring and fall can vary so much, this is when we often see cases of ich or other diseases caused by a compromised immune system. When fall comes, an easy solution is to turn your heater down no more than one degree per day as temperatures cool. This is when a quality heater will really help you, since value heaters may cause the temperature to drop more than one degree per day, causing much unwanted stress. Or automate the process with a heater controller such as the JBJ True Temp Digital Heater Controller.

Consider this case:
If a room gets up to 90°F during the day, even though the heater may be set to 75°F, the water may increase to 90°F. The temperature will increase even more if the aquarium includes pumps, lights, or other electrical equipment. If, on that same night, the temperature drops into the 70s, the tank could drop to 75°F. This sudden drop in temperature will compromise your fishes' immune systems. A compromised immune system allows a fish to be prone to parasitic infections such as ich. If the aquarium temperature is raised closer to that of the expected high temperature the room will become, the temperature change in a 24-hour period will be more consistent.
Click here for a more printer-friendly version of this article.  
Click here for a pdf version of this article.  



Contact us