🪴 5 cm NFT net pots
The 5 cm net pot is the standard size for Growrilla NFT channels. It slots by friction into the drilled lid, at the spacing set by the factory (10 cm as standard). Its job: hold the substrate (rockwool or coco fibre cube) and the young plant while the roots grow down into the nutrient film of the channel.
Sold in packs of 50, 100 or 200, it is exactly the volume needed to start a full rotation on a 4-channel 2 m NFT module, with a reserve margin for replacements. Ideal for urban market gardeners and advanced hobbyists in continuous production.
Technical specifications
- Diameter: 5 cm (2 inches)
- Height: about 5 cm
- Material: black food-grade polypropylene
- Compatibility: Growrilla NFT channels 100 x 50 and 100 x 80
- Recommended substrate: clay pebbles, rockwool cube 36 x 36 x 40 mm
- Country of origin: Italy
🌱 Use and best practices
Start your cuttings or seedlings in a rockwool cube soaked in a weak nutrient solution (EC 0.6). Once the radicle emerges from the cube (about 3 to 7 days depending on the species), insert the cube into a net pot and place the net pot in the channel. The roots then naturally grow down towards the channel's water film.
The pack of 50 covers a full season of continuous rotation (weekly sowings, harvest after 4 to 6 weeks). For a more modest setup of just a few channels, the stock keeps for several years.
💡 Tips: continuous production routine
For weekly lettuce production, set your routine to the following cycle:
- W0: sow 10 seeds in rockwool cubes.
- W1: transfer the germinated cubes into 10 net pots, place in the channel.
- W4-W5: harvest the first 10 lettuces, freeing up the spots.
By repeating each week, you keep 10 fresh lettuces harvested from week 5 onwards, with no gaps or overstock.
🔄 Lifespan and reuse
Very good lifespan: 5 to 10 grow cycles per net pot, provided you remove the root residues between uses (brushing or soaking in diluted bleach water). The 5 cm size faces little mechanical stress compared with the 14 cm net pot of RDWC systems.
The pack of 50 therefore easily covers 2 to 3 years of use on a classic NFT setup.
