I have seen quite a few people recently losing their fish koi and goldfish over loss of power. I am just trying to figure out why this is happening so much to others. Last year I lost power for 9 days and only thing I did was dump water from a bucket every few hours. Not one loss. This year lost power for a full 23 hours and didn't not even put in battery powered aerator until the 14 hour mark and not one loss. This time I am severely over stocked 25 koi from 4 to 16 inches in only 800 gallons. What causes such losses with only a short loss of power to others? Someone fill me in.
And I have heard all the its because of oxygen already in water arguments and it does not make sense. I am going to give the reasons it makes no sense to me at all by describing my situation. Its a 800 gallon liner pond with only a 15 gallon barrel filter and a large plant pot turned diy filter. I have no water fall, no bakki shower, no trickle tower, and no aerator to put extra oxygen in my pond. MY water returns to the pond via a 1 1/2 inch pvc pipe only. I have no plants because my fish eat them unless you count the blanket/carpet algae. And then you see people losing fish with larger ponds with more surface area for oxygen and have all the fancy stuff to go in the pond to make it perfect for the koi to begin with and to add all the extra air and such. So why is my simple little over stocked under oxygenated pond fine with no power ( I can go out and shut of the power to it with no issues even in the hottest part of the day and the fish after 6 hours are not even coming to surface to gasp yet) able to keep koi alive with no issues and the bigger better ponds with better equipment having major losses. And it can't be temperature I live in coastal NC the temps here are really high so much I even do small water changes on the worse days to bring the temp down from feeling like bath water, my pond is in full sun also. I want any input you want to throw at me kind of looking for answers so I will know what not to do or to help others.