Heater for 2.5 gallon - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 07-12-2007, 09:10 PM Thread Starter
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Heater for 2.5 gallon

I have a 2.5 gallon rectangular tank and plan on buying a Betta. Today I bought a heater that is adjustable. It's a Hydor, 25 watts, submersible. Has anybody used this brand of heater before? It seems like it would easily overheat my tank... What kind of heater is suggested for such a small tank that would keep the temp stable?
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post #2 of 4 Old 07-12-2007, 11:15 PM
I have a couple of HyDor submersibles, Although they are much larger, and hven't had any problems with them at all. One is probably 7 years old and hasn't even had a moment of problems. Not even a sticky contact.
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post #3 of 4 Old 07-13-2007, 12:46 AM
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personally I'd go with a Newattino 10W

there are two versions, one with a thermostat (black) and one without (blue).
Underworld do supply the US market but i'm sure they are under a different name, so perhaps a quick email to them to find the name and a stockist near you would be prudent.

your other option would be a reptile under tank heat mat,
I'm sure that the HabiStat Heat Mat 4inch x 5 inch is the smallest on the market (4 watt) so depending in your tanks footprint that should suffice.

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post #4 of 4 Old 07-13-2007, 12:52 PM
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Hydor is a good heater and I believe they all have built-in thermostats...which means it shuts itself off once it gets to a certain temperature and turns on when it goes below the set temp. 25W is a lot for a 2.5 gallon but unfortunately its hard to find them under that. I used a 25W marineland visi-therm in a 2 gallon for a betta and had no problems though. The heaters you really have to worry about overheating with are the ones without the built-in thermostat.

Mike H
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