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Posted by djh on June 18, 2005, 11:27 am
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>>>I bought 2 brand new elite heaters yesterday. both of them, in separate
>>> tanks are set to 24o yet currently the water temperature in both tanks
>>> (which was around 24 when I put the new heaters in) is over 30o. Just
>>> what is happening - surely they can't both be faulty?? The temp is
>>> measured with a digital probe which is placed half way down the tank
>>>
>> The temperature settings for the heater are a guide only. You won't find
>> many (if any) heaters where you can reliably set it a temperature and
>> expect it to read that value. Water temperature should always be checked
>> with a good, reliable thermometer (which you are doing). In the past I
>> have used heaters for my discus which I set at 28 deg and the water has
>> been 34- 36 deg.
>>
> Check that you digital thermometer is working. My £9.95 Maplin aquarium
> thermometer developed a fault where it read 5°C over, thus I kept turning
> the heater down, thinking heater was misbehaving. Luckily the thermometer
> has an internal and external reading so after removal from tank and
> leaving a while, switching between internal and external temp revealed the
> 5°C error. When I got a replacement the tank temp was 21°C (whoops), also
> interestingly the same as indicated by a stick on LCD colour thermometer
> strip on outside of tank.
Nope - tube thermometer says same readings. Admittedly it's very warm in the
house at the moment which could be affecting it but I think I'm going to get
different heaters, rather than take any chances.
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> tanks are set to 24o yet currently the water temperature in both tanks
> (which was around 24 when I put the new heaters in) is over 30o. Just what
> is happening - surely they can't both be faulty?? The temp is measured
> with a digital probe which is placed half way down the tank
>