In aquaponics, waste from the fish provides nutrients for the plants and the plants help clean the water for the fish.  

The technician looks after the day-to-day running of the systeml, including feeding the fish, checking water quality, fixing equipment, and making sure both fish and plants stay healthy.  They may work on farms, in research centres, or at educational sites.

Someone starting out might earn around £18k to £23k a year.  With more experience and technical knowledge, this can rise to £25k to £30k.  In senior or management roles or in larger commercial farms, salaries may be higher, especially if the technician also helps design or improve the system.

To become an aquaponics technician, it helps to have knowledge of both aquaculture, fish farming, and horticulture, growing plants.  Some people take college courses in agriculture, environmental science, or aquaculture.  Others learn through hands-on work or apprenticeships.

Understanding how ecosystems work, having good problem-solving skills, and being comfortable working with technology are all important.  A strong interest in sustainability and science is also useful for this kind of role.