Categories: koi fish, koi pond, koi pond maintenance – Posted on May 22, 2022May 22, 2022 how long can koi survive without oxygen power outage? 5 things to do with your koi pond during power outage how long can koi survive without oxygen power outage? 5 things to do with your koi pond during power outage … Continue reading >how long can koi survive without oxygen power outage? 5 things to do with your koi pond during power outage