STEP 1: Remove the existing aim flow eyeball from the return line of your pool and replace it with the correct Pooldevil Pro aim flow fitting.
STEP 2: Attach the Pooldevil Pro head to one end of hose and the “L” connector to the other. 
STEP 3: Slide the filter sock over the filter locking ring as far as possible. Pull the filter sock through the Pooldevil Pro head util the filter locking ring is tightly secured.
STEP 4: Attach the “L” connector to the aim flow fitting and secure it in place using the U-clip.
STEP 5: Turn you pump back on and let the Pooldevil Pro get to work!