my mom told me about this waterfall thats onsale at walgreens. the pump is battery operated, so theres no electrical cord. i was just wondering, would it be ok if i put this in adrians (my BCI) cage? i think i read that it wouldnt be a good idea somewhere but idk i cant remember. also, anyone know how much it would be for a fish pump, the kind you need for thee DIY humidifier? thx