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SKU: 6307


Interested in Aquaponics? We’ve got your medium! Hydroton is the preferred medium for Aquaponics because it's lightweight and pH stable. Available in 5, 25, and 50 liter bags.

The Original Hydroton, a unique, lightweight, expanded clay aggregate made in Germany, has returned. This natural clay is mined, formed into pellets and then kiln-fired at high temperatures to cause the clay to expand into tough balls. Clay naturally has balanced capillary action and an ideal surface structure. The Original Hydroton brand of expanded clay is semi-porous and generally does not float like other products can. For best results, rinse all expanded clay before use. It is reusable as long as it is thoroughly cleaned between uses. With a size specification of 8-16 mm, Hydroton drains freely, is pH adjusted, free of harmful heavy metals and inert. It can be used as a stand-alone grow medium for most hydroponic systems, or mixed in with other medias such as coco, potting soil or rockwool for increased aeration and drainage.