Haha bro, actually it's nothing much la, we juz place 1 side of the magnet cleaner inside the betta box then let the other side of the magnet to stick outside the aquarium and place the betta box somewhere in the middle level of tank. Cause the betta box will tend to float on the top ma, so fish seldom will go in...but if its in the middle level, fishes will go in easily.. maybe i'll try to post a pic or something...cause my explaination quite confusing too..hahah