Last year Robert built a small polytunnel to see how hydroponics would work for growing vegetables and fruit. As this was towards the end of the growing season there was little he could grow, however this year we have beetroot, chillies and tomatoes.  Although this project is for Aquaponics the only difference is that we would use fish to provide nutrients for the plants which was not possible in the small space Robert had available.  The process is effectively the same but without the use of chemicals.