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Old 09-25-2015, 08:23 AM   #1
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Question Can a higher wattage heater be harmful?

I have 5o g acrylic tank of freshwater with some plants and tropical fishes, as per standards: a 200 Watt heater should suffice and probably best would be to have 2x100 Watt heaters at each corner.

But my question to my esteemed seniors is:
"Using a 500 Watt Digital heater can be harmful?"

I will place the heater near the intake of my canister filter.

Highly appreciate any advice on this.

Regards;
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Old 09-25-2015, 09:45 AM   #2
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Unlike filters, It's not recommended to use heaters rates above your tank size. In my experience, a heater that is make for a larger tank will often heat the water too warm.

I would get 2 heaters that equal the wattage you want to achieve. Say you need 200 watts, get 2x100w heaters.

Heaters go on a rule of 5 watts per gallon.


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Old 09-25-2015, 11:08 AM   #3
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When (not if) the heater sticks in the on state, it will cook your fish much quicker than a properly sized heater.
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Old 09-25-2015, 11:15 AM   #4
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Quote:
Originally Posted by ImACoolguy View Post
Unlike filters, It's not recommended to use heaters rates above your tank size. In my experience, a heater that is make for a larger tank will often heat the water too warm.

I would get 2 heaters that equal the wattage you want to achieve. Say you need 200 watts, get 2x100w heaters.

Heaters go on a rule of 5 watts per gallon.


Caleb
Not to mention a heater that size could turn that tank into soup over night...

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Old 09-25-2015, 07:13 PM   #5
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I use a 400w ehiem heater in my 90g I keep it parallel to the bottom of the tank ,
It's covered with a egg crate cage ti keep the fish away , I also have 2 sensor probs on either end of the tank , that will cut power to heater if it fails to shut off with the thermostat , the power strip with the sensors was if I remember right was about 60 bucks,
from foster and smith . I had several heaters fail and it paid for itself two times over,
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Old 09-25-2015, 07:13 PM   #6
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Thanks to ImACoolguy, 54seaweed, ghyti and Brookster123 for the advice.
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Old 09-26-2015, 11:25 PM   #7
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Moderator kindly lock this thread.
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