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Adjustable aquarium heater-newbie question


Lori
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i have tried several, including the german made adjustable Eheim which was very inconsistent.   The best most reliable heating has been a pair of inexpensive preset Fluval heaters coupled to an Inkbird thermostat. Thermostat is set for 77. Heaters  preset for 78. Redundancy and excess capacity provides some safety and consistency. 

 

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40 minutes ago, Tetra Guy said:

The best most reliable heating has been a pair of inexpensive preset Fluval heaters coupled to an Inkbird thermostat. Thermostat is set for 77. Heaters  preset for 78. Redundancy and excess capacity provides some safety and consistency. 

 

This.  A heater+thermostat as one piece is a difficult thing to get right especially for cheap and especially when encased in something not very thermally conductive like glass.  It becomes a pretty trivial problem when you can move the temperature sensor away from the heater some.  The cheap non-digital heaters also use a bimetal thermostat which have a lot of hysteresis, but work great for a backup shutoff incase something goes wrong (for example your temperature sensor falls out of the water). 

 

 

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