Clay Pebbles (LECA)

Baked clay balls that hold moisture and air, reusable after a good clean. Great in DWC and as a top layer. They do not hold nutrients, so the solution does the feeding.

Rockwool

Spun mineral fibres that hold water and air beautifully and stabilise seedlings. It is single-use, dusty when dry, and slightly alkaline -- rinse and pH before use.

Which to Choose

  • Beginners / DWC: clay pebbles -- clean and forgiving.
  • Seedlings / NFT: rockwool cubes -- easy rooting.
  • Reuse-minded: clay pebbles win.

Frequently Asked Questions

Q: Can I mix them?

A:

Yes -- rockwool cube rooted, then potted into pebbles, is common.

Q: Is rockwool safe to handle?

A:

Wear gloves and a mask when cutting dry slabs; rinse before use.

Q: Do pebbles feed the plant?

A:

No -- they only support; the nutrient solution feeds.

Media choice is small but matters. Plan your system with the care schedule tool.