This article was co-authored by Doug Ludemann. Doug Ludemann is the owner and operator of Fish Geeks, LLC, an aquarium services company based in Minneapolis, Minnesota. Doug has worked in the aquarium and fish-care industry for over 20 years, including having worked as a professional aquarist for the Minnesota Zoo and Shedd Aquarium in Chicago. He received his Bachelor of Science in Ecology, Evolution, and Behavior from the University of Minnesota.

wikiHow marks an article as reader-approved once it receives enough positive feedback. This article has 12 testimonials from our readers, earning it our reader-approved status.

This article has been viewed 731,419 times.