An improved connection system for window blind treatments comprising tape having loops for retaining locking members. The treatment comprises a sheet member that hangs downward covering the blinds on the side away from the window. One or more strips of tape are vertically attached to the sheet member on the interior side closest to the blinds. The tape contains loops at predetermined intervals along its length. Locking members are attached to the loops of the tape and to the blind's ladders at the predetermined intervals to secure the treatment to the blinds. When secured, the treatment will raise and lower when the blinds are raised and lowered. Rods are inserted through the locking members and rod pocket and extend horizontally across the sheet member and blinds. The rods provide weight and support to the sheet member, such that when the blinds are closed, the rods and sheet member will rise with the blinds, thereby creating cascading folds in the sheet member.