By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
@Marbanya, I like keeping my soil alive, so I would do it even with coconut.
As for pests, you could use at least a layer of rice hull. To keep a little moisture on top, and making a safe zone for the roots.
It's sayd (broscience maybe), that you get around 30% more roots by doing that.