JBJ nano ato not working

[Tofu Brady]

I have the jbj nano ato on my 20gal and it all of a sudden started blinking red i checked everything the pump was submerged but it wasnt filling the tank up. Everything had power pls help now

 

[DDenny]

Not really an emergency cause you can manually top off the tank but I did answer your other thread you started with the same title.