If you are looking to grow safe and healthy leafy greens, NFT is the way to go.
With the ability to grow a large number of greens even in a limited space, it is one of the most common hydroponic systems
In an NFT system, a nutrient solution flows over the roots of the plants which is placed in a grow tray.
Mostly used to grow large fruity vegetables, Dutch Bucket System is the most reliable and easy to maintain hydroponic system.
Here, crops are grown in ‘buckets’ to which nutrients are added.