All Hydro 101


Hydroton is the trade name for “lightweight expanded clay aggregate” or LECA. Simply put, small clay balls are heated in a rotary kiln to about 1200° C of expanding and form a hard clay particle about the size of a marble.


Reusable, sterile because of high temperatures during production, and has a high air-porosity potential.


The product typically contains dust that must be washed prior to use. Hydroton is practically inert, having almost no cation exchange capacity.

Hydro 101

Featured Topics

Roots issue

The Roots Issue

NPK issue


Grow Outside

Grow Outside

Nutrients FAQs

Nutrients FAQS

Roots FAQs

Roots FAQS

All FAQs

All FAQs