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Old 03-23-2006, 04:25 PM   #1
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New Aquarium Owner - Heater for 125 Gal question

We are purchasing our first aquarium. It is 125 gallon and I am having trouble finding a heater for it. I was leaning towards a visitherm based on the reviews but I can't find where to buy the 400W. (that's what I need based on the size of the tank) Can I do 2 smaller heaters instead?

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Old 03-23-2006, 09:49 PM   #2
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I would purchase three 250 Watt heaters. You actually need 625 Watts (5 Watts per gal). With more heaters the tank will be heated more evenly. I recommend the Visi-Therm Stealth since they are easily hidden.


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Old 03-23-2006, 10:10 PM   #3
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If your using two cannisters I would recommend two Hydor ETH 300 heaters.
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Old 03-25-2006, 06:39 PM   #4
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multiple heaters is the way to go... 200 or 250's will be fine.. I run 2 heaters on my 125..
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Old 02-23-2011, 07:22 AM   #5
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heater size

afternoon what size heater should a get for a 57 gallon 6ft long
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125 gallon, eat, eater, heater

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