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Old 07-23-2013, 07:15 PM   #1 
Julio1983
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Heater/Thermometer Variance

Hey guys!
Does anyone know what the variance in temp between the heater and thermometer usually is?
I got my fishy a new heater on Sunday and I want to make sure that its ok :)
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Old 07-23-2013, 07:16 PM   #2 
MattsBettas
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What exactly do you mean? Your question is confusing...
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Old 07-23-2013, 08:20 PM   #3 
Julio1983
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So I know that say the heater is set to 26, that the thermometer will read a few degrees either higher or lower of that.
Well that's what it says in the little booklet that comes with it anyway!
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Old 07-23-2013, 11:16 PM   #4 
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Okay, put the heater and a thermometer in a bucket or a fish tank without fish in it. Set the heater to the temp you want. Wait a day or so and look at the thermometer.

For example:

If I set my heater to 79 degrees and after a day or so my thermometer shows 83 degrees, I can generally assume that I need to set my heater to 4 degrees lower than the temp I want the tank to be at. So If I want the tank to be at 80, I would set the heater for 76. This process is called calibration.

This only holds for a tank of that size, however. The temp I set my Hydor Theo 25 watt heater at to keep my 1 gallon tank at the right temp is a bit different from what I set it at to keep my 3 gallon tank at. You may need to re-calibrate at different times of the year, especially if the temp of the room the tank is in can vary a great deal (ie, my living room here in the mountains without a/c is always in the 80's-90's in the summer and in the 60's during the winter).

Does that make sense?
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Old 07-23-2013, 11:33 PM   #5 
Julio1983
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Thanks so much for your reply!
Ok, so my heater is set to 26 (79) and this morning was reading 28 (83).
My tank is 15 litres (3gal).

This is the heater I have http://www.crossroadsaquarium.com.au...ypage.tpl.html

I originally thought his old heater was playing up so I got him this new one!
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Old 07-24-2013, 08:25 AM   #6 
Polkadot
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There is sometimes a degree or 2 difference in the heater & thermometer readings,especially if you have them placed at each end of the tank.I have aqua one heaters also and they are very good.
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Old 07-24-2013, 10:39 AM   #7 
Julio1983
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Thanks for the replys everyone...
i had put the new heater in on Sunday, and i feel its really unstable.
It seemed to be swinging from as low as 22 to 28 degress within a few hours... i didnt feel that this was right, and after observing my gorgeous betta over the last few days, hes seemed really unhappy and a bit down and clamped... so i put the old heater back in tonight! its still an aqua one, just a different one.
These heater/thermometers stress me out!
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Old 07-26-2013, 06:57 AM   #8 
Polkadot
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I use these type of Aqua One heaters,they are very good and stable.

http://www.petbarn.com.au/fish/aquar...eater-55w.html
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Old 07-28-2013, 07:35 PM   #9 
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That's the one I have :) :)
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Old 07-29-2013, 07:07 AM   #10 
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Oh good,I have found them to be terrific.
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