Which heater is better for a 1 gallon fish tank? 25w or 50w? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 18 Old 02-25-2012, 08:00 PM Thread Starter
Which heater is better for a 1 gallon fish tank? 25w or 50w?

which one is better? i need the heater for my fry mollies, which one works better and which one will not make the water hot? the tank looks like this http://www.walmart.com/ip/Hawkeye-1-Corn…
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post #2 of 18 Old 02-25-2012, 08:09 PM
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Quote:
Originally Posted by I Love Tetras And Oscar View Post
which one is better? i need the heater for my fry mollies, which one works better and which one will not make the water hot? the tank looks like this http://www.walmart.com/ip/Hawkeye-1-Corn…

I'd go with a 25 watt for a 1 gallon, but think even that may be to much wattage for a 1 gallon. I'd go for one that is adjustable, and not pre-set

Gwen

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post #3 of 18 Old 02-25-2012, 08:14 PM
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I would be careful trying to heat a tank that small.

Placing the tank near a source of heat would be better.

10g Fry / Hospital / QT tank (as needed)

75g Saltwater Reef, Ocellaris Clownfish, Lyretail Antias (baby), Lemon damsel, Longtail Fairy Wrasse, purple dottyback, snails, crabs and a few LPS corals.

220g Still sitting empty (come on Lottery I need the numbers to come up!)
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post #4 of 18 Old 02-25-2012, 08:17 PM Thread Starter
but can i adjust it to the lowest number? and you know what i mean right? adjust it to the lowest number so it wont make the tank hot.
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post #5 of 18 Old 02-25-2012, 08:28 PM
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A slightly higher temperature than the fish need within 1-2 degrees is actually GOOD for fry.

It speeds up their metabolism and they will grow quicker. They need to be fed slightly more though.

10g Fry / Hospital / QT tank (as needed)

75g Saltwater Reef, Ocellaris Clownfish, Lyretail Antias (baby), Lemon damsel, Longtail Fairy Wrasse, purple dottyback, snails, crabs and a few LPS corals.

220g Still sitting empty (come on Lottery I need the numbers to come up!)
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post #6 of 18 Old 02-25-2012, 08:28 PM
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1 gallon? Huh! For that even 5 W would be dangerous. What is the temperature of your room?
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post #7 of 18 Old 02-25-2012, 08:30 PM
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Quote:
Originally Posted by I Love Tetras And Oscar View Post
but can i adjust it to the lowest number? and you know what i mean right? adjust it to the lowest number so it wont make the tank hot.

Can be tricky. The lowest setting could still be too hot for a 1 gallon. You may be better off with a preset, that would shut off at 78, but the problem with that is 78 may not be the "right" temp.

Gwen

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post #8 of 18 Old 02-25-2012, 08:34 PM
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You also need to factor in the ambient room temperature the tank is in as well.

Shutting off at 78F, if you have a hot room will raise the temperature slightly anyway in that small amount of water.

10g Fry / Hospital / QT tank (as needed)

75g Saltwater Reef, Ocellaris Clownfish, Lyretail Antias (baby), Lemon damsel, Longtail Fairy Wrasse, purple dottyback, snails, crabs and a few LPS corals.

220g Still sitting empty (come on Lottery I need the numbers to come up!)
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post #9 of 18 Old 02-25-2012, 09:36 PM Thread Starter
i dont have a warm room, so a 25 watt wont work? can i just give it a try?
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post #10 of 18 Old 02-25-2012, 10:03 PM
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You should get a thermometer. Well, 25 W is enough to rise like 9 Fahrenheit in 6 gallons. Since you can't set the temperature on such a small heater like that, it will. In your tank it could go upon 100 Fahrenheit, which is far more than deadly. I asked the temperature of your room, because it's not equal everyhere. On the top of an armoire it can be +2 or 3 Fahrenheits, or you also can put it close to the radiator. But use a thermometer for this, and forget about the 25 W heater.
But wait... If it's for mollies, get at least a 12 gallons tank for them.

Last edited by 4shi; 02-25-2012 at 10:07 PM.
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