Activated Charcoal for Terrariums: Is It (Really) Necessary?
Advice needed. I built a small terrarium for isopods. How often should I spray the plants down? Is it ok for springtails if the charcoal layer is below the white rock? :
DIY Terrariums | The Hungry Artist
Garden Myth: Do You Really Need Activated Charcoal in Terrariums? - Laidback Gardener