My question regarding loose (granulated, floc) Rockwool is the preparation of the Rockwool prior to filling a pot with it. It comes compacted in a huge bag and I was wondering how big the clumps should be that I tear apart. Certainly thick enough to not fall through the holes in the bottom of the pot but how large? Would chunks be ideal or smaller golfball sized pieces work better? Also, do I need to squeeze it into the pot of simply leave it fluffed up in there by just tossing it in?