I have had both salt and fresh water aquariums in the past. I down graded and have a 45 gal tank with a few goldfish the past 10 yrs or so. Goldfish are hardy and can live in any water condition or so I thought. About 6 months ago the 3 goldfish and a Pleco started to look sick. Eventually all had died. Old age was the reason I believed why. I then purchased 3 Koi but 2 died after just 2 weeks. My wife finally convinced me to test the water. Years of poor maintenance took the toll. Nitrates were +200, nitrites 1.0, hardness 300, Alkalinity 40, and PH 7.2 So here I am relearning and searching for answers. After several water changes I'm happy to report that Nitrates are 80, Nitrites 0, Hardness 75, Alk 120, and PH 7.8. I did add another Koi ( I think its a goldfish as it has no feelers) and a Pleco. The Pleco didn't survive the 64 F water temp but also learned that they aren't good to have with Goldfish. Onward to seek more knowledge...
Learning Curve
- Thread starter Ken3038
- Start date
The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
If you have answers, please help by responding to the unanswered posts.
PHP
Aquarium Advice Activist
- Joined
- Sep 25, 2011
- Messages
- 144
Hello and Welcome to AA.
Are you saying that you have Koi in your 45 gallon tank? If so, I recommend that you take them back. Koi and grow to be 2-3 Foot long and need 1000+ gallon ponds.
Are you saying that you have Koi in your 45 gallon tank? If so, I recommend that you take them back. Koi and grow to be 2-3 Foot long and need 1000+ gallon ponds.
redsea
Aquarium Advice Addict
to the forum!
bruinsbro1997
Aquarium Advice Addict
to AA! 
I would try rehoming the koi, these get around two-three feet long and won't be happy in a tank any size for long, I'd say a pond.
