[youtube width=”640″ height=”480″]http://www.youtube.com/watch?v=mP8_RAt75bQ[/youtube]
In this video comparing submersible or external aquarium pumps, Ryan Batcheller of Bulk Reef Supply (a RB sponsor) takes a look at the pros and cons of each type of pump. While you might have a preferred method, the points listed in the video certainly are well worth spending the 3mins in watching the video. One of the biggest differences is that of heat transfer with submersible pumps, specifically mag drive. In the video, a simple test is done to determine the amount of heat that is transferred to the water and while you could argue about the amount of water volume used, the results speak form themselves.