LECA makes a superb medium for hydroponics gardening because of its light weight, porosity, and inert nature.
You've probably seen clay balls many times and just didn't know what it was. It's used often in commercial decoration because it is clean and efficient. You may have seen it in a potted plant at the doctor's office:
L.E.C.A. (Lightweight Expanded Clay
Aggregate) is made by heating clay under very high heat until it puffs
up, like popcorn. This results in a very coarse medium; the balls are about 1/4"
across. They have superb drainage and are sometimes added to denser media to
help promote drainage in the planter.
L.E.C.A Brand names: Geolite, Grorox, Hydroton
You can order LECA here:
Hydroton clay balls 10 liter bag
Clay ball layer for top drips
You can't see it, but these E&F pots have a
2" layer of clay balls in the bottoms; it won't wash away!
HYDROTON is good for: top drip pots like dutch pots; good as a base layer for ebb & flow pots.
*Tip: Rinse the clay balls before use in a colander to remove all that red dust.
PROUD OF OUR
Best Buy on the 'net