I have grown with both crushed granit 3/8 from home dump and hydrocorn . Bottom line no differance , except money. More than a few decades of growing, so its been tested. HE MAJOR THING IS TO FLUSH THE HELL OUT OF THEM BEFORE USE AND BETWEEN CROPS.
Always clean any mater what ever you choose, A dead Bug is a happy bugs.
Good old bleach , and flush till the water does not smell of bleach.