LECA stands for Lightweight Expanded Clay Aggregate. They are clay pebbles made out of extremely high temperatures.
LECA clay balls have a neutral pH level because they lack organic matter. You can easily buy LECA balls from garden centers. They come at a higher price than traditional soil, but it's cheaper in the long run.
LECA reduces the risk of applying too much water. LECA is a highly absorbent material that absorbs excess water for plant use. It acts like a water reservoir for the root system.
LECA provides additional support for the plants, especially when you grow them on net pots in hydroponic systems.
The pores in LECA distribute the nutrient solution in the plant's roots evenly. For best results, use LECA pebbles with a liquid fertilizer.
LECA balls come at a higher price than other growing media but are reusable clay pellets. You can use it for a long time without breaking.
LECA balls do not suffocate the plant roots no matter how high the water level. They have tiny pores and small spaces in between that store oxygen in the bottom of the pot.
LECA clay balls absorb excess moisture from the soil and prevent root rot. It distributes enough water for plant growth.
LECA balls are made from inorganic material that fungus gnats and spider mites cannot lay their eggs on.