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DIY Plywood Aquarium

Building a 700-Gallon DIY Plywood Aquarium: Is It Possible? | Mark Callahan, Mr. Saltwater Tank

In this episode, Mark visits Brady, a dedicated reef keeper who took the ultimate DIY plunge: building a massive 700-gallon reef tank out of plywood and fiberglass. Brady shares the "reverse boat" engineering behind his build, explaining how he used 2x4s and epoxy resin to create a custom display that fits perfectly in his basement. The tour covers everything from his unique "cryptic zone" sump and home-water-heater heating system to a mind-blowing, custom-engineered automated frozen food feeder controlled by his Apex. More than just a gear walkthrough, this video is a reality check for the hobby, discussing the "bumps in the road", like battling cyano and low nutrients, that every reefer must navigate to reach a thriving, fully grown-in masterpiece.

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