Quote:
Originally Posted by mcgyvr
2 x 100W should be ok for a 40G tank assuming that your ambient room temperature is no more than like 8 degrees cooler than the temperature you want to keep the tank at..
2 x 125W (or 150)would be better if you keep your room temp around 68-70..
And yes you set them at the same temp and I would recommend a controller like an inkbird blue.. Heaters are known to fail.. Having them run on a controller is a good way to help ensure that when the heater temperature controls fail it doesn't overheat your tank.
Inkbird blue is like $30 and you can plug 2 heaters right into it..
https://www.amazon.com/Inkbird-Tempe...aquarium&psc=1
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I wonder what will happens when controller fails? Thats a single point of failure.
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