Every aquarist faces the moment when their fish outgrow their tank — a scenario that can be both challenging and rewarding. Our host Jesse successfully grew an underwater bonsai tree using monte carlo and spiderwood, but now the tree (and the harlequin rasboras) have gotten too big for their pico tank. In this video, we show you how we upgraded to a Mr. Aqua 7.5-gallon aquarium to give the fish and plants more room to expand. Whether you're contemplating a similar upgrade or simply curious about the process, this guide will help you make the best move for your underwater pets.

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Want more tips to keep your aquarium thriving? Check out our related articles for expert guides on aquascaping, plant care, and aquarium upgrades. And if you never want to miss a post, subscribe to our newsletter for the latest how-to content, gear recommendations, and inspiration—delivered straight to your inbox.