Where to find fine (3-4mm) prime agra or hydroton?
I am really having a hard time finding the hydroton or prime agra pellets that are the smaller size, typically used for orchids with finer roots, such as oncidiums. Last year I got some from First Rays, but now all I see that is there is the larger pellets, more for phals. I've searched on line, to no avail. Anyone out there know where to find this stuff?