Im just about to do some repotting and all that...
Im getting the standard washed sand, perlite and standnard soil mix, but dont know whats the best rocky option. I usually mix in 7mm bluestone (basalt) and ive tried dolerite (I think) before, but heard scoria is good too (my local place stores 20mm but i could pulverising it a bit). Granite is also available in rocks and in dust form (rockdust?).
Any recommends / hard NOs?