Just curious: here in the UK, "2x4" isn't actually 2x4. Often it's more like 1.5x3. Something like 38x89mm.
Is that the same in the US, or when you say 2x4 (or 4x2 ) are yours actually 2x4? So 50x100mm or thereabouts.
I'm still looking at options for building an indoor pond, and as it'll be somewhere around 2500-300l (660-790 US gal ish) and 3ft deep along the same basic design as the plywood tanks with a timber carcass, I want to make sure I'm building it strong enough!
Is that the same in the US, or when you say 2x4 (or 4x2 ) are yours actually 2x4? So 50x100mm or thereabouts.
I'm still looking at options for building an indoor pond, and as it'll be somewhere around 2500-300l (660-790 US gal ish) and 3ft deep along the same basic design as the plywood tanks with a timber carcass, I want to make sure I'm building it strong enough!