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Caution:

   

Before installing or operating the heater, read and 

 

understand all safety instructions and warnings.

Ready-Set Heaters come with suction cups pre-attached 
for simple installation.

Ready-Set Heaters are preset to maintain the aquarium 
water temperature at 78°F +-2°F, so no temperature 

adjustment is required.

setup GuIde

Place the heater 
into the aquarium

Install the heater into the aquarium after it has 

been filled with water. The heater is fully submersible 
and may be installed either vertically or horizontally. 
The heater must be installed so that water in the aquarium  
is 

above the minimum water line

 marked on the heater. 

The water level 

must be maintained

 to stay above this 

line. 

See Figure 2.

Plug the heater into 
the electrical outlet

Let the heater sit submerged in the aquarium 

for 30 minutes before plugging it in, so that it can adjust  
to the water temperature. Plug the heater into the 
electrical outlet and it will begin operating. The red LED 
operating light will illuminate indicating that the heater 
is heating, and will turn green when the water has 
reached the set temperature.

Monitor the aquarium 
water temperature

Always use a reliable aquarium thermometer  

in combination with any heater to double check the water 
temperature. After the heater has run for 24 hours, check 
the water temperature using a thermometer. To ensure 
proper temperature maintenance only use the heater in 
the aquarium size specified for its wattage. The heater 
should be placed in an area with good water flow. Use an 
aquarium hood or cover to prevent excessive heat loss.

1

.

2

.

3

Fig. 2

Vertical

position

Horizontal

position

Water level 
OK

OK

Minimum

 

NO

Fig. 1

Minimum water level

Suction cup

LED operating light

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