lil different. use natural lava rock myself. guess everyone has there own methods, its good to share idea's! seems like the water and air retention of the white rock would be low. have to look into that hydrocorn, as it does take some time to clean our rocks well before use or reuse.
swisha Reviewed by swisha on . seedling in gravel rock any p.h. issues with gravel. some pics of last harvest close up Rating: 5