I have a HOB biowheel filter that was working great for a long while but about a month ago i noticed it stopped and i thought it was clogged.All i did was lift up on the intake tube and it started up again.Well today when i woke up i turned the lights on to my aquariums and let them be not knowing there filter turned off again.I just now checked it and noticed it was off and all my fish were gasping for air and the snails were at the very top too.I don't know when it stopped working but im guessing it was in the middle of the night.Should i get a new filter and scratch this one?i have only had it since december.