URGENT HELP NEEDED!!

[Oilers]

One more problem,
Since my tank was leaking water, it lets to my ATO reservoir draining at a faster rate than I anticipate it to be. I woke up this morning to an empty reservoir and the lights on the ATO blinking red. I refilled the reservoir and the pump turned itself on but there's no water coming out of the hose. I turned the unit off and shake the pump to get rid of the air bubbles but it still doesn't work. Any idea? I am using a Tunze ATO.