 |
Heater Size Guide | ||
|---|---|---|---|
| Gallons/Liters | 5ºC/9ºF | 10ºC/18ºF | 15ºC/27ºF |
| 5 gal/25 L | 25 watt | 50 watt | 75 watt |
| 10 gal/50 L | 50 watt | 75 watt | 75 watt |
| 20 gal/75 L | 50 watt | 75 watt | 150 watt |
| 25 gal/100 L | 75 watt | 100 watt | 200 watt |
| 40 gal/150 L | 100 watt | 150 watt | 300 watt |
| 50 gal/200 L | 150 watt | 200 watt | two 200 watt |
| 65 gal/250 L | 200 watt | 250 watt | two 250 watt |
| 75 gal/300 L | 250 watt | 300 watt | two 300 watt |
Instructions:
Subtract the average temperature of the room the aquarium is located in from the temperature you wish to maintain the aquarium water at. Find the size of your aquarium in the left hand column and move to the column that shows the number of degrees the aquarium needs to be heated. If the heating requirement is between levels, move up to the next larger size.
Example:
Average Room Temp = 68 degrees F
Desired Water Temp = 77 degrees F
-----------------------------------------
Heating required = 9 degrees F
Tank Size = 20 gallon
Heater size needed = 50 watts
