Last year I graded through two big bags of BioGro mini bark nuggets 5-8mm, and ended up with between 1/4 - 1/3 fines (less than 2mm).
This year I took Craig's advise, I've just finished grading though Orchiata ‘Precision’ 3-6mm and 'Classic' 6-10mm and was very impressed, it is what it says it is, in all bags there was less than a cup of fines per bag - I don't think I'll even bother grading the fines out next time. ‘Precision’ 3-6mm I would say is the best size bonsai as 90% grades through the medium (5?mm with the interchangeable sieves).
I'm not affiliated with this product what so ever, just found it excellent quality/value, and thought you'd like to know!
Happy repotting everyone
