downshiftprojectpolytunnel Now that would be a good size for an aquaponics system! This is being built by Dave from The Downshift Project in west Wales, unfortunately just for standard veg – maybe I should suggest an aquaponic system for it! It’s got good, high, square sides – perfect for waist-height growbeds. It’s home made – all the stuff from B&Q – and about 8′ wide by 16′ long. I’m still oscillating between a greenhouse and a polytunnel for our aquaponics system, and if I can find a polytunnel like this then that might tip the balance (at least until I can afford a greenhouse this size!)