Hydroton by the Kilo
Price: $3.80 CAD
Don't need a whole bag? Order only what you need by the kilogram! Approx. 2.5 L /kg
Hydroton Grow Rocks are lightly expanded clay aggregate which is a high performance growing media.
It does not compact and is totally reusable.
It can be cleaned and sterilized for re-use. It drains freely and doesn't not hold an excessive amount of water.