Dear Alberto, You recently described your "slits" in pots thusly: "For the 5 gallon buckets I cut three vertical slits one third up the bucket's height, from the bottom up and at the same time cutting 1 in or so fo the bottom itself to avoid any watering collecting at the bottom." ...does this mean you are truly only making a slit - not a vertical actual gap in the wall of the container where media could fall out? And at the bottom you are making some sort of a cut that does form a "hole" for drainage, much like the usual drainage hole? How large in diameter is the hole at the bottom of your container? Thanks, Cynthia W. Mueller College Station, TX