The concept of aquaponics is, on paper at least, deeply appealing. Being able to produce multiple foods with minimal inputs and next-to-no waste has attracted many well-meaning idealists over the years. It’s a beguiling concept, but it’s hard not to empathise with Kingsley Safo, who returned to West Africa from aquaponics events in Europe thoroughly bemused that people were prepared to assemble systems that “were mobilised to produce a few kilos of vegetables” a year.

However, his initial disappointment only spurred him on. He decided that aquaponics could still be cost-effective and ecologically sound – but only if the standard formula was dramatically altered. The end result is a venture, Bio Green Aqua, which appears to be efficiently producing meaningful volumes of produce, with minimal inputs, in a limited space. Here’s hoping that Safo really has developed a model that lives up to the aquaponics hype.