ok I just got a filter for my 5.5 g. It's "Elite", sponge filter. The guy at the store gave me this little pump to go with it, and it's blowing a lot of bubbles and what seems to me like, giving a current and I don't think bettas like that too much. Am I on the right track? Is it supposed to be quite loud? The pump thing vibrates quite a bit . I just wanna make sure I got the right stuff here.