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Which heater is better for a 1 gallon fish tank? 25w or 50w?

This is a discussion on Which heater is better for a 1 gallon fish tank? 25w or 50w? within the Freshwater and Tropical Fish forums, part of the Freshwater Fish and Aquariums category; --> The tank will NOT go up to a 100F. It would have to be very very close to a heat source such as an ...

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Which heater is better for a 1 gallon fish tank? 25w or 50w?
Old 02-25-2012, 10:14 PM   #11
 
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The tank will NOT go up to a 100F. It would have to be very very close to a heat source such as an electric heater or heating duct to get that high.

I have 2 x 25w in a 15g gallon and they cannot keep the temperature at even 78F which is there preset value.

I would recommend you get the heater,
If you have a thermometer, find a container and add slightly warm water, using the thermometer, record the temperature until it gets to 78F. This will give you an idea of the "feel" of the water.
That way you can manually check the tank and see if it "feels" too warm or cold. (using the thermometer as well)
I have used this method for small tanks which I absolutely only use in a TOTAL emergency until I can short the problem out...never had a fish die and a few degrees temperature + or - will not affect them...water temperature in nature rarely stays stable, there is change due to rain and sunny days etc.

5-10g tanks are not very expensive and it would possibly be in your benefit (budget allowing) to look at getting one of these. It gives you a more stable environment for the fish than a small 1g tank would.

Hope this helps.
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Old 02-25-2012, 10:33 PM   #12
 
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Once i overheated the tank. Trust me, only my Betta could survive it.
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Old 02-25-2012, 10:37 PM   #13
 
can the light be the heater
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Old 02-25-2012, 10:45 PM   #14
 
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It will give some heat but I dont think it would keep the temperature high enough.
I have a 10g with a fairly powerful led lamp and it only raised the temperature by a small amount.

I think the 25w heater would work or look at getting a slightly larger tank. Given the right conditions the fry will grow quick and will need a bigger tank if they are still too small to go back with their parents.
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Old 02-25-2012, 11:09 PM   #15
 
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I think the light really can heat up the tank a little, since this tank is really small, but depends on the lamp. I still say 25 W is dangerous. If it's not automatic, and you can't set an exact temperature, as long as it's plugged in it will just be heating and heating. You can read about the heaters, it's something like ~1W/liter... I don't really know, I don't like using small tanks, and for the big ones I can set the heaters.
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Old 02-26-2012, 12:20 AM   #16
 
buy a lamp dimmer switch and an aquarium thermometer. plug the dimmer switch into the wall. plug the heater into the dimmer switch. adjust until you have the right temperature. presto.

this is how i regulate temps in my 10 gallon as well as the heat pads in all of my snake tanks.
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Old 02-26-2012, 07:52 AM   #17
 
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Quote:
Originally Posted by I Love Tetras And Oscar View Post
can the light be the heater

In incandescent bulb could definately be a heater for a 1 gallon, however at night, you'd have a temp drop, which may effect whatever you have in the tank. What are you putting in a 1 gallon by the way?

Regular light bulbs can get very hot, and do contribute to heat in a tank. If you are using a bulb such as LED's your a florescent bulb you won't have to worry about that.

Gwen
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Old 02-26-2012, 11:19 AM   #18
 
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I think the key word here is adjustable.

I've never tried to heat less than 1-1/2 gallons but 25w adjustable heaters worked just fine in that size.
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