T T TeamTapir223 2 May 2013 Youssarian said: This is an old picture but I was wondering...how do they keep the water so clean? Aren't hippos really dirty animals? Click to expand... The filtration system cleans 8000 gallons of water every 90 minutes ! The exhibit holds 360,000 gallons. Team Tapir223
Youssarian said: This is an old picture but I was wondering...how do they keep the water so clean? Aren't hippos really dirty animals? Click to expand... The filtration system cleans 8000 gallons of water every 90 minutes ! The exhibit holds 360,000 gallons. Team Tapir223
