I found what I'm hoping ends up being a good deal on an 11 lbs. Block of compacted Coco coir at Home depo for $15.95 . So I ordered Artemis one of the blocks to see what mass that kind of size ends up being useful for! I really did not want one of those little blocks that are usually stocked up at the store. I thought I might just have to get a bunch of those little ones if forced to. We shall see!