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Old 12-01-2014, 04:55 PM   #1 
bettagirl110299
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50 watt heater for 3 gallon?

Is 50 watts too much for a 3 gallon tank? Other than the hydor theo heater what other heaters are good?
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Old 12-01-2014, 05:06 PM   #2 
iSheree
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I would go for a 25 watt heater for a 3 gallon tank. I am not sure about heaters available in your area sorry. I use Aqua One adjustable heaters and highly recommend adjustable ones. Hope someone else can help!
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Old 12-01-2014, 05:07 PM   #3 
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if its adjustable try it out, i bet you can make it work, i have a 50w in a 3gal...
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Old 12-01-2014, 05:08 PM   #4 
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Okay thank you very much!
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Old 12-01-2014, 05:09 PM   #5 
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Originally Posted by kjg1029 View Post
if its adjustable try it out, i bet you can make it work, i have a 50w in a 3gal...
+1 make sure you test it out without the fish in the tank. You don't want to risk overheating the tank and killing your fish.... Or you could start with the lowest temp setting if it is adjustable and increase it slowly while checking the temp often. Give it a few hours each time until you get the right temp.
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Old 12-01-2014, 05:09 PM   #6 
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I use one of those 50W preset tetra ones for my moms bettas 3gal. It was my spare that I used in a quarantine for my endlers. My moms betta was in unfiltered, unheated water so I gave her my spare filter and heater, it works and keeps the 3gal temp at 78.
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Old 12-01-2014, 05:12 PM   #7 
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oh yeah i forgot to say mine isnt adjustable, but adjustable are way better. sometimes mines around 78 degrees, sometimes its 84degrees, lol
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Old 12-01-2014, 05:34 PM   #8 
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oh yeah i forgot to say mine isnt adjustable, but adjustable are way better. sometimes mines around 78 degrees, sometimes its 84degrees, lol
Those temperatures aren't too bad but the fluctuations are not good. Thats why I always recommend adjustable. I am sure you know what you are doing though. :)
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Old 12-06-2014, 09:00 AM   #9 
Little Zoom and Lady Iris
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25 watt heaters are usually recommanded for 3 gallon tanks. You could technically use a 50 watt, but you are running a risk if it malfuntions.

I personally use Eheim Jager 25 watt adjustable heaters in all my tanks. They are very reliable, but they are larger than most heaters.

I also heard and read good reviews on the following;
Cobalt Aquatics NEO-Therm 25 watt
Fluval Marina Mini 25 watt
Visi-Therm 25 watt
Reading reviews and reseaching can save you the headache longterm. I found out the hard way, that all heaters are not created equal.
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Old 12-06-2014, 09:10 AM   #10 
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Those temperatures aren't too bad but the fluctuations are not good. Thats why I always recommend adjustable. I am sure you know what you are doing though. :)


just now read this lol, and yeah i have a fireplace down stairs, so it gets warmer at night, its not actually the heater.

in the summer it stays at about 80 all day and night.
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