This has to be my most brilliant aquarium hobby idea. Over the past 2 years I have made several tank dividers, spent around $20 and wasted several hours trying to find ways to temporarily isolate the aggressive fish of the week. This is so much easier, cheaper and less time consuming. A Gerbil Ball has enough ventilation to fill the ball with water. It is easy to surface it, open the lid, add food. The water is airated, balanced and correct temperature . I can either place it in a spot where it doesn't move (while feeding) or in the right position with the powerhead it will move to and fro. Just like he is swimming around the tank. I can see his beauty and he can't kill my other fish. I have to shelter in place due to covid-19 and so does my German red.
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