hi im new to this website. i unfor do not play the bass but my boyfriend does. for xmas i really want to get him a pedal he mentioned the other day and i thought i would start looking for it now. flea plays it on either the by the way album or one hot minute im not to sure. he mentioned he loves that effect and really wants one so i asked him what it was and he said an aqua filter? i looked at guitar center.com and it gave me a billion pedals of course but none titled an aqua filter..so im thinking thats an effect on a pedal with a dozen other effects. go figure...he only has boss pedals so if they make a pedal with an "underwater sound effect" as he put it that would be awesome if not then the next best. thank you so much!