http://lllreptile.com/store/catalog/reptile-supplies/living-vivarium-products/-/zoo-med-hydro-balls/ It's a terrarium substrate, somewhat like the Hydroton clay balls we use in Riparium planters.
zoomed hydroballs?
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i just returned from petsmart with a bag of zoomed hydro balls. its an expanded clay substrate. i got a 2.5lb bag for $9.99 it's about 2/3 the volume you get in a bag of fluorite so it's light. it's dark in color like aquasoil. anyone ever use it?
