Reading through this, it all started with dirty hydroton balls. From an outside perspective, would it not be easier to just get new hydroton each time and not deal with cleaning it to re-use? After spending the better part of a day mixing two 5Kg bricks of compressed coco into something I could use to grow in, I concluded it was to much work for the result, and took all day. After doing this I realized my time was worth the extra $ that prepared coco would cost. Just saying...