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Hi... i liked to do an update earlier but it wasn't a clear progress so I wasn't sure what to say. We're on day 13 of the treatment now. The good news is that the kois seem to be reasonably well. They are more active. They eat. They rarely flash. However, the swordfish population is still not...

Thanks @emeraldking. Agreed with you on effect caused by the shallow water & heat. Perhaps other factors come to play as well since they also don’t move much in the morning or evening when it’s cooler? Also they have the flashing and the not-eating-well problem lately. The swordtails are in...

Thanks Naughts, i’ll look into that. I just find out that the swordfish population are not healthy now. There’s a breakout of this cloth-like symptom (see pics). I don’t know if it’s a parasite or some kind of fungi. The red ones seems to have more white spots on their body, but i’m less sure...

Hi Naughts, here’s my water test result: pH. 7.5 Free NH3: 0.007 mg/l NO2: 0. mg/l DO: 4 mg/l TDS: 130 The dissolved oxygen is too low. My test kit (Sera brand) has 2 reagents. After adding the reagents, the instruction didn’t ask me to wait...

They spend almost all day under the bridge, or in a quiet corner. They are always shy, even during feeding time they don’t like to come near human. There are many swordtail fishes in the pond. They’d come frenzily for the food pellets and pushing the pellets everywhere. The kois will usually...

Hi, there’s a delay with the delivery of my test kits. I still can’t tell much about water quality yet until tomorrow, i hope. The fishes seem to improve a bit, the bigger ones now eat & move a little bit. Here’re some pics of them & the pond. The water is indeed shallow. I filled it with sand...

Thanks Naughts for your kind words. Yeah the fish was around with me for 4 yrs. Quite sad and shocked to see it gone. But reading up, i think that my fishes were probably living a stressed life (maybe?) because of their rather inactive and shy from human, so I’m hoping to improve their lives...

Hello from the tropical Vietnam. I’m sorry admit i’m quite ignorant about pond keeping because although i have a koi pond for 4 years, i’ve mostly never had sick fish, thanks to an undesirable setup. More on that below. That changes today, and i’m suddenly stressed and very worried. My 13 m3...