I have a pond that is approx 400 gallons...has one small creek spill, 1 large waterfall and one medium waterfall. I had 4 butterfly koi, (3 ) 6” and 1 around 12”. One of the smaller ones was yellow and week 2 of adding them he disappeared...never found a body or remains at all. I kinda figured maybe a bird. That was about 3 weeks ago now. Today, I added about 30 gallons of new water.....I add water all the time because the waterfall at the head is so big it causes a lot of evaporation. As I was about to pull the hose out I found one of the smaller koi floating and he was bloated so I know he did not just die. As I netted him I looked at the body and did not see any infections or anything yucky....and as a not I do add dechlorinator and metafix when I add water. What could have happened to him? The others seem to be fine. I’m new to
This....TN weather, some algae..not a lot, no algae chemicals ever, I use a toilet wand on a long stick to clean rocks then oump
Filter,ez 400 uv filter and large pump, I added some pics of
Pond for you to see setup. I wish I had taken pic of the deceased butterfly but he is gone out to the field for the coyotes tonight
This....TN weather, some algae..not a lot, no algae chemicals ever, I use a toilet wand on a long stick to clean rocks then oump
Filter,ez 400 uv filter and large pump, I added some pics of
Pond for you to see setup. I wish I had taken pic of the deceased butterfly but he is gone out to the field for the coyotes tonight