Jeff Posted April 14, 2022 Share Posted April 14, 2022 (edited) Does it matter which way you place your heater in your aquarium? I like my heater vertically, as the cord is less in the tank, and is easier to cover up. However, I've heard different opinions about having it horizontally - possibly dispersing the heat more efficiently? Also - if you do go horizontally: does it matter if it's at the top / middle / bottom of aquarium? Edited April 14, 2022 by Jeff Link to comment Share on other sites More sharing options...
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