All expanded clay is not the same! hydro crunch expanded clays are made with only the highest quality clay, producing a media that is uniform, stable & low in inherent E.C, meaning you get the best outcomes from your plants. Our clays are the next generation in the media you have come to know & love. The ceramic shell & inner pore structure retains moisture & releases it back to your plant's roots as needed. Grow rocks will not compact, ensuring excellent aeration for the life of your plant. it is reusable & lasts indefinitely, making it a great value.
Superior water-storing properties
Pure mineral without fibers or solvents
Coarse pored and aerate expanded clay
Offers excellent evaporation protection as a top layer
Can be used with all current hydroponic systems