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The Guardian UL Listed Aquarium Heater - Aquarium Supplies at Aquariums Direct

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The Guardian UL Listed Aquarium Heater

Item# PLX038

List price: $37.99 to $42.99

Our Price: $31.99 to $35.99

Price varies based on options selected.

Available in a variety of sizes to suit 10-75 gallon tanks
The safest choice in aquarium heating
Unbreakable metal tube construction
Designed to pass 12 rigorous safety tests
Great for tanks with more aggressive fish

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Only ships in contiguous USA.

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Estimated Ship Date: 11/27/09

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Options Available
Size: 10 Inch-110 Watts, 10 Inch-50 Watts, 14 Inch-150 Watts, 14 Inch-200 Watts

How to determine which size heater you need:
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.

In larger tanks, or where the room temperature is significantly below the desired water temperature, two heaters may be required. Heaters should be installed at opposite ends of the aquarium to heat it more evenly.

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