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Old 03-13-2013, 01:55 PM   #1 
motherpeters
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Problems with Marina Betta Mini Heater?

Is anyone else having problems with the Marina Betta Mini Heater? I bought mine from Petsmart about two weeks ago, and today I noticed that it no longer was keeping my tank at a nice 79 degrees. After leaving the house for about two hours, I returned home to find my that my Betta's tank had shot up to 90 degrees! I removed the heater pronto, but I'm wondering if this is a known problem for this brand of heater.

Thanks!
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Old 03-13-2013, 02:05 PM   #2 
Otterfun
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Quote:
Originally Posted by motherpeters View Post
Is anyone else having problems with the Marina Betta Mini Heater? I bought mine from Petsmart about two weeks ago, and today I noticed that it no longer was keeping my tank at a nice 79 degrees. After leaving the house for about two hours, I returned home to find my that my Betta's tank had shot up to 90 degrees! I removed the heater pronto, but I'm wondering if this is a known problem for this brand of heater.

Thanks!
I had one and it fluctuated from 74F to 80F overnight when we had the cold snap a while ago. I do not trust that Marina Betta 8W for sure. I returned it within 2 days.
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Old 03-13-2013, 02:13 PM   #3 
kyle89
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I have heard of this happening before. Can happen to any preset heater. Mine fortunately just stopped heating an it was only 5 days old
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Old 03-13-2013, 02:37 PM   #4 
waterdog
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Preset heaters are a joke. They are totally unreliable. Get an adjustable heater.
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Old 03-13-2013, 03:08 PM   #5 
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Case in point: when I got my EHEIM Jager 50W heater (arguably one of the best heaters available) a week ago, I set it to 79 degrees. Come back the next day, and find out the water is at 87 degrees. Luckily, its an adjustable heater, and it can be calibrated with a dial. I calibrated it correctly and now it holds the temperature very tightly at 79 degrees. I love it.

The moral of the story here is that many heaters come poorly calibrated from the factory. And I imagine the problem is even worse with the fixed temperature heaters since you can't make up for any bad calibration by turning the temperature up or down.

Spend the extra $10 and get a good heater. Seriously, mine cost me $24 from Amazon. We're not talking a lot of money here.
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