ive recently seen the coolest lookin BP viv the other day ... it was like a 90 gallon tank with all kinds of plant cover and a rock wall backing. it also had a water fall with a lil pond as a water dish ...see that viv gave me a crazy idea- putting fish in the pond! - anyone know if a BP would try to eat a fish or even know its there???... also on the topic of a waterfalls and ponds - how often should u put knew water in ?