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Notice: Small balls are currently unavailable. We have big balls (15-25 mm) only. If you prefer your balls on the smaller size, please check out Grow!t (8-16mm).
Hydroton® clay pebbles (also known as LECA, exclay, clay balls, hydrocorn, "volcano rock", brown marble things, round boys, etc.) are made by heating pH neutral clay to around 1,200 °C (2,190 °F) in a rotary kiln. Despite common misperceptions, Hydroton® is not volcanic. (You may be thinking of pumice, which is also a great product but is significantly more expensive!)
Hydroton®'s air to moisture ratio makes it ideal for hydroponics. Because it is so lightweight, easy for transplanting and harvesting, and easy on the hands, it is a favourite of small producers using media bed or Dutch bucket techniques. It can be used to fill plastic net cups in aeroponic and NFT (Nutrient Film Technique) systems, as a medium for drip irrigation systems, or as a medium for container gardening. It can also be used to create unique water features and to ensure a humid environment, healthy soil conditions, and superior plant growth in vivariums and living terrariums!
Hydroton® clay pebbles hold water extremely well and offer good capillary action. It is reusable, clean, and odorless. Hydroton® can be mixed with heavy soil to improve its aeration and drainage. Hydroton® brand expanded clay is semi-porous and generally does not float like other products can.
The 10 litre bag will fill approximately 24x 3'', 21x 3.75", 10x 5", 8x 5.5'', or 4 - 8'' net pots. The 50 litre bag will fill about 4x 5gal containers. We also offer 4 litre ziploc bags!
Perfect for passive, wick, and subirrigation use, individual hydroculture pots or hydroponic systems. Reuse over and over by sterilizing in a very mild bleach solution (about 1/2 cup per gallon of water).
Protip: Rinse your balls.