captainmoss
Aquarium Advice Apprentice
- Joined
- Feb 20, 2015
- Messages
- 12
Hi - I am new to this site - but I am hoping that someone can help me.
We have two large (12") koi and several smaller koi/goldfish. From April to November, the large koi and some of the mid sized ones go in our pond outside, while the smaller fish stay in our 55 gallon aquarium.
In the winter months, we bring all the fish inside. This has been working perfectly for about 7 years.
On January 2'15, we set up a new 70 gallon aquarium and transferred the fish. The old tank went to my work office along with some of the small fish.
By about Feb 5'15, the fish in the 70 gallon aquarium started acting weird - staying on the bottom, swimming erratically (diving to the bottom and then basically doing somersaults), open and closing their mouth quickly, etc. I understand that this is the result of stress. I tested the water and I don't see any problems. PH is 7.5, Ammonia is 0.5. We do have hard water, but I don't think that is a problem for koi or goldfish - and our water has always been hard - so it is nothing new.
It was getting so bad that we assumed it was something to do with the new tank and we put the fish in a large Rubbermaid bin in the basement. They seemed fine there. We replaced all the water in the 70 gallon tank and put the fish back a few days later. After a few hours, they started going crazy again. One of the big koi even looks like he is bleeding internally - you can see orange or red through his skin and in his fins.
I don't know what else to do. Please help. The large koi have been in our family for over 10 years and we don't want to lose them.
We have two large (12") koi and several smaller koi/goldfish. From April to November, the large koi and some of the mid sized ones go in our pond outside, while the smaller fish stay in our 55 gallon aquarium.
In the winter months, we bring all the fish inside. This has been working perfectly for about 7 years.
On January 2'15, we set up a new 70 gallon aquarium and transferred the fish. The old tank went to my work office along with some of the small fish.
By about Feb 5'15, the fish in the 70 gallon aquarium started acting weird - staying on the bottom, swimming erratically (diving to the bottom and then basically doing somersaults), open and closing their mouth quickly, etc. I understand that this is the result of stress. I tested the water and I don't see any problems. PH is 7.5, Ammonia is 0.5. We do have hard water, but I don't think that is a problem for koi or goldfish - and our water has always been hard - so it is nothing new.
It was getting so bad that we assumed it was something to do with the new tank and we put the fish in a large Rubbermaid bin in the basement. They seemed fine there. We replaced all the water in the 70 gallon tank and put the fish back a few days later. After a few hours, they started going crazy again. One of the big koi even looks like he is bleeding internally - you can see orange or red through his skin and in his fins.
I don't know what else to do. Please help. The large koi have been in our family for over 10 years and we don't want to lose them.