Koi pond at a restaurant in Yogyakarta Indonesia

I have a pretty severe rust issue that my rust breakers just can't keep up with so I am installed a Rid-o-rust system for the sprinkler system.

I am worried this can affect the Koi pond, the sprinkler system splashes the pond a bit, but no direct lines feeding into there.

Has anyone installed the system? Is there anything I need to look out for?

We completed a potassium permanganate treatment for bacterial infection in our 2400 litre pond, this was Saturday night 5th September, ammonia was high, Nitrite was 0, nitrate 0, we did a large water change on the Sunday due to the pH being 6, still testing at 6 today, we also have a 9000 litre pond and the pH is fine in this one, how can we safely raise the pH with the already stressed fish, no food has been given since Friday, we have added aqua evolution start gel to the filter.

Water parameters today are: Ammonia 1, Nitrate 40, Nitrite was 0, pH 6.

We inheritethe ponds and fish in April when we moved into the property, sadly found out the smaller pond originally had 40 koi used to establish the filter 😢 which I do not agree with, but it was done before I even brought the property, there are now 8 small koi left, none have ever really fed properly over the couple of months we have lived here, only came up to feed during the really hot period we had.

In July, we got 2 new koi to add to an existing koi pond with 3 established koi. We quarantined them for a few days, then added them to the pond. We never saw them surface. We have a small stream to a larger pond, but it was blocked as best as we could to prevent smaller fish from getting into the stream. Regardless, I looked for the fish in the bottom pond a handful of times just in case. We deemed them gone. However, 6 weeks later I found them both alive and well in the bottom pond! They are safe there, but we typically drain the bottom pond and shut the waterfall off for the winter. I'm trying to gain trust and establish a feeding routine with them, but it's going slow. I'm getting worried that we won't be able to catch them to move them up to the koi pond before winter. There are many hiding places and the lilies and lotuses are lush. I've researched how to safely move koi, I have a pan net and plan to use it to get them into a bucket to carry it up to the top pond. However, they're so skittish and have many places to hide, I just can't imagine we'll be able to get them to move them up before it gets too cold. I also want to give them time to establish their place with the other koi before it gets too cold. Should I just add a bubble to the bottom pond for the winter and attempt to move them in spring?

Two months ago we had an osprey raid our pond and took one of our shusui. We had two, they were both all blue- no red. Well, all the koi went to the bottom and wouldn't come up for food at all until 2 weeks ago. Now they are trying to catch up on food.

Well, the remaining shusui now has a strip of yellow in its light blue skin. The same discoloration also appeared in an all white koi.

Will this go away as they get back to a normal diet? What can I do to help this?

Hi Reddit, inherited this fish, no problem for years, but suddenly looks like this. Moves around normally and doesn’t seem to be a pine one (I can’t get a good pic) and ai says no but I want to be cautious on if I should go to the vet. Thanks

My sister bought an old house with an unmaintained, abandoned koi pond. There were 7 very thin and sick fish in it. They were about 6 inches in length so I think goldfish?? Anyway- she was going to dredge the pond and I offered to take he fish so they would not die. Could not find anyone to take them. I got a 50 gallon tank and they have been living in it for 4 years. Is this inhumane? It’s not ideal, but I legit can’t find a pond enthusiast to rehome them. Opinions?

Morning routine! It's honestly been a little too hot and humid in the mornings to sit out here and drink my coffee, the heat doesn't bug me the wet blanket that hugs my body bugs me 😂 . Crazy September weather for sure. My next project is to add earth tubes to all 3 greenhouses and see what we can keep them at temp wise this winter without much propane usage!

Im currently in the process of moving house and noticed a small injury and a growth on the fin while netting my fish is this bad? And is there anything I can do?

Hi there. I recently inherited a koi fish that was in terrible shape. His name is Blooper. Bloop's tank was disgusting, and he had no filter or heater. I've cleaned his entire tank, fixed the levels, added a heater, filter, and nice bubbler. My concern isn't the tank

I've always thought Koi fish were extremely social creatures; I don't know I've ever seen a single Koi fish somewhere. There is always at least 2. Should I look into getting Bloop a friend? Would he be happier to have a buddy, or should I leave him be just by himself?

Edit: thank you for all the advice on the pond. Blooper has been around for at least 5 years, is he still a baby? He’s quite small. Pic in comments.

Looking at purchasing this koi, only thing currently putting me off is the damaged pectoral fin, is it likely to fully heal? fish is approx 7.5inches TIA

We have a 460 gallon established pond with 1 large koi, and 2 mediums. Today the ammonia levels spiked and the fish started to act off and kind of sick - gasping and bumping into each other/huddling together.

I recently cut back a bush above the pond that they prefer to hang out under (they still have cover but the plant is no longer hanging into the water) but fished the leaves out. Could this have caused the ammonia to spike?

We’re hoping the fish will be ok. The pond has been established for 10+ years, but we’re new pond owners in the last year. We definitely haven’t been over feeding them.

So far we’ve: done two partial water changes totaling roughly 25%, added beneficial bacteria and stress coat to try and get the ammonia level down and protect the fish. The levels seemed to drop around 6pm after the second wave partial water change but we tested again and it appears to be going back up.

The PH is relatively low, general hardness seems fine etc. everything on the pond master test is on normal range except the ammonia.

What should we do?

So our shagoi goldfish hybrid (about 5 yrs old) keeps doing this wacky straight out the air Flipper routine, in the early morning and evenings. Seems like it might be hunting/bug catching behavior buuut has anyone else seen this before? Water parameters are great, no other fish are showing any signs of anything. We used prophylactic prazi in the spring. No rubbing or visible ulcers, masses, no other signs of distress. Is this just him being him?

I have some Koi & just wondering what type they are, they’re 4-5 inches maybe right now
One I thought may have been a yamabuki ogon; but it’s head went from gold and is platinum looking, it’s fins are platinum looking & it’s back end is showing slight bits of white which wasn’t the case when i got it.
One I believe is a Shusui ; one a kohaku too?
The grey looking one has more black markings than when I got it.

We've had a heat wave of about 90 F every day this week and I notice my biggest baby hovers in one area of the pond by the ledge. She also has not been eating. Added new water and changed filters yesterday so water looks better now than in these photos taken yesterday. I noticed this morning she still wasn't eating, and she looks a little lumpy on the sides. Could she be egg bound? The others are bumping into her slightly. We are new koi owners so any help and how to help her would be great. She just looks like she may be suffering. Is this a call to a koi specialist? Vet?

While trying to get my Koi in a net tonight in order take a look at something near her gills, she scraped up against the net while trying to get away and it looks like she has a scrape on her side now. Is this anything I should be concerned about or will it heal on its own? I was not able to catch her and did not want to overly stress her out.

Servicing Southern OC. Koi Ponds, Water Gardens, consultation, koi health.

Late evening feed today! Sad summer is coming to an end!

I got really invested in Koi for the past few months and I decided to take over this beautiful Koi pond in my partner's airbnb. I know there's more to improve and I'm open to suggestions ☺️

(See comment below for the whole koi pond)