ply wood tank

[fkshiu]

Plywood tanks are great for large applications where glass/acrylic would be too heavy/expensive/ungainly since plywood is cheap and can be built on site with regular wood tools. Plywood tanks are also good for in-wall tanks since you only need one transparent side.

They are essentially inside-out boats with the wood on the outside and the fibreglass/epoxy coating on the inside.