One of the challenges in having longer term plants, that lives more than 4-6 months, in aquaponic growbed is that they fill up the grow media with roots over time and it increases water level in the growbed. Also removing older plants from the growbed becomes very hard.
A new experiment is in progress to reduce the intensity of this problem. I am removing media (gravel) from a growbed so the growbed will have just water in it, and then to place pots filled with grow media in the water. It will look like a vegetable plant in a pot but the pot itself is placed in water with top two inches above water. I am using pots with holes around it for easy waterflow and for roots to extend into water. This way we can easily lift each pot/plant out of water or move around in the growbed.
View original post 91 more words