LECA stands for Lightweight expanded clay aggregate. Essentially it means they're baked clay balls that expand when you soak them in water. They're 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. The most important thing you have to think about when growing your plants in LECA is to never later their roots sit in water and to add a hydroponics fertilizer of some sort to your water. This way your plants get the nutrients they need and drink when they're thirsty. Hopefully, the benefits that LECA will give you may have been enough for you to give it a try!

LECA clay balls are commonly used in hydroponic gardening and aquaponic systems. They provide excellent drainage and aeration for plant roots while retaining moisture and nutrients. LECA clay balls are also used as a growing medium for plants in terrariums, as a decorative element in landscaping, and as a lightweight aggregate in concrete.

LECA clay balls are popular in hydroponic gardening because they are pH-neutral and inert, meaning they do not react with the nutrient solution in the hydroponic system. This makes them an ideal choice for growers who want to ensure their plants receive the proper nutrients without any interference.

In summary, LECA clay balls are a versatile and useful growing medium that can be used in various gardening applications. They are lightweight, provide excellent drainage and aeration, and can be used in hydroponic systems, aquaponics, terrariums, landscaping, and as a lightweight aggregate in concrete.