If the hose is not screwed on correctly to the tank thread, air can escape. Watch the short video below and try following the steps below for a tight and secure hose connection: Unscrew the hose connector cap and remove the tube completely. Move the screw cap connector up and down to loosen it. You may need to use more force to loosen a very tight cap. If the o-ring is stuck within the cap, use a narrow object to release it and reposition the ring. You can now re-attach the tube to the hose and the hose onto your Beach Shower. Turn the cap clockwise to tighten it in place. FYI - the coiled hose can come loose from time to time after being used, especially if stretched out and moved quite a lot and will need to be tightened as required.