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
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oh ok thxUsually the red light indicates a time out for running to long. Might want to call JBJ customer service and see what’s happening. If you haven’t unplugged for 10 seconds then try that and then plug it back in.