There are many different type of aquaponics systems. These include media based, NFT(nutrient flow techinque) and DWC (deep water culture). Use this infographic to help choose the right system for you.
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Vegequarium a compact indoor aquaponics system with plants and fish in a closed loop. This pin is for my Son who wants to create a mini indoor kitchen garden.
Linked grow beds with overflow water level at top of each bed + an interconnected drain line at the bottom of each bed. As long as the beds are dead level, this will work very nicely.