piss poor
the waterfall itself is nice, but the pump is terrible. worked for maybe a day then didn't work anymore. keeping the pump where you want it to be is also extremely aggravating. the suction cups that are mounted on the bottom of the pump itself don't seem quite big enough to keep it stabilized in a proper position. I'm not bashing exo terra in any way, i think their products are great, but i haven't had much luck with anything water related and exo terra. look around the web for reviews before you buy this. there's a lot of complaints!