So i'd like to get a congo puffer but i'm not very sure on their tank size. I've heard from 20's to 55's. I've been asking around and people have said that a 20g high is fine because they sit there 95% in the sand. I know that is pushing it and i was wondering if you guys could help me get a good idea on what size tank it would need. And i would be starting it out in the 20g high so what size would i need to move it out? thanks

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