Stick the clear hose in the kit that connects the floating fountain to the pool wall return into the return hole in the pool wall or screw it on the return, using a universal connector that came with the kit.
Push the floating fountain disc out to the area in which you want it to be stationary when it sprays water. According to AbGal, the floating disc has a weighted base. This holds the floating pool fountain in position.
Run the fountain every day as part of regular maintenance. This will keep the hose clear and the fountain holes clear of debris. Running the fountain during the day keeps the water 15 degrees Fahrenheit cooler in the summer. Running the fountain at night keeps the water from getting too cool.