I have a pond in my garden with about 11 fish in. They are all Koi Carp. We emptied some of the water out and topped it up with fresh clean water and cleaned the filters out and they are now working. The water has become very cloudy again and green. The fish seem to be just floating near the surface of the water and moving very slowly. one of them has started to lean to one side and one of them has already died. What do you think i could do to save the rest? Would be ever so grateful if you could help. Thanks
do you have a pump it sounds as if you need more oxygen if you need to stand a fork near the pond and put a hose though the handle so that fresh water is spraying on the top of the pond have you got one of those spray ends on your hose pipe that will help do it asap, and dont worry about the pond overflowing if poss leave it going all night
Cheers, ye i have sorted it now, i did what you said over night and i took sample of water in2 garden centre again for tests and they said the same, they also said that there was a certain Chemical that there were too much of in the water. So I brought this special pump that eliminates that and puts oxygen in the water aswel.