Leca is an acronym and it stands for: Lightweight expanded clay aggregate. It is a collection of clay balls and doesn’t contain any nutrients. All they do is soak up a little water and expand accordingly. Any nutrients your plants need, you need to add into the water.
Leca balls are great as a medium for plants to grow in because it makes watering your plants much easier, you reduce the risks of getting pests, and you can easily “check-in” on your plants.
2 litre bag.