Activated carbon pellets (also known as activated charcoal) filter out any harmful chemicals, metals, mould and other nasty things you don't want in your terrarium or houseplant soil. Add it just above the drainage layer of your terrarium or mix it into your plant soil to filter out the bad stuff.
The carbon also works great in aquarium filtration. They come in convenient and resealable bags.
- Mold will be a thing of the past
- Odour prevention
- 100x surface area compared to charcoal
One main benefit is the reduction of nasty smells, this works for plants, terrariums & aquariums.