Darren field trip water decor

At this field trip we went to water decor to learn more about water we learned that we need filters to clean bacteria in the water if we don't clean the water the fish could die.We also tried to feed the koi fish we got free fish food and at the end we had questions if we answer one question correct we got a pen and a note book.we went to the back and saw all the dirty waters it was very smelly.we also saw a strip when you put the strip in water you can see how dirty or clean the water is we saw a type of fish food it's actually a tablet you must stick it to the glass and you will see the fish eating it(I actually only remember one type) we also saw a lot of aquariums.And there interesting fish there there is a fish that has a neon blue color and then we went back to school that was my field trip.