7. DWC (Deep Water Culture) system
DWC or the raft system is one of the most popular commercial aquaponics systems due to the variety of plants that can be grown and simplicity. Basically, the plants are floating on the water surface while the roots are hanging down and soaking up the nutrients from the water. It can be installed over a fish tank or a pond, but in that case, the fish will be tempted to eat the roots. That’s why the best way is to keep the fish in a fish tank while pumping the water into long channels with floating rafts. What is more, the system costs are moderate.
Pixabay/Public Domain
Now, let’s talk fish.
