I am referring to this video he made It looks like a great idea for both cleaning the sandbed and performing water changes. However I have no clue how he got that pump to stay on that setup. I got the same pump as he did. I found a 1/2 in nipple that screwed into the pump but its only held into the pump by a o ring and the force of the magnet on the inpeller. I want to know if any of you know about a pump I can use that I can attach a 1/2 tube. I also have no idea how he goes from that clear rigid tube down to the 1/2 in flexible tube. If I can get this set up it will a game changer for water changes and for cleaning the sand bed.