Results 21 to 40 of 42
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03-06-2020, 08:32 PM #21
Should also have said, other than being pinked up, the behaviour is that of a healthy and happy koi. Hangs around the feeding area during the day and joins in with the breeding activity at night whether it be following the males doing the chasing or joining the females being chased.
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04-06-2020, 08:11 PM #22
It is a difficult one to work out RS.
I know my Shiro looks whiter some days than others.
But on the off white days it's more a bluey white.
But I've cut the amount of colour enhancing food I add to the mix. And this seems to helping clean up the Shiro white.
Might it be a natural colour pigment change if the fish seems otherwise happy?
Only other thing j could think of is something in the water irritating the fish.
Could even be sensitive to hormones pheromones released by other fish.
Or is there anything in the anoxic baskets that could irritate?
You could try adding activated carbon in a mesh bag to mop up any compounds that might be in the pond...Last edited by davethefish1; 04-06-2020 at 08:19 PM.
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04-06-2020, 08:44 PM #23
Thanks Dave.
Even my normal Shiro tends to be quite veiny the majority of time.
Another thing I noticed from comparing pics from when I bought fish to how they look now is that the colours of my Koi tend to fade. Red beni tends to go orangey and the Sumi, despite very hard water, goes greyish.
The Doitsu Ochiba I moved from the grow-on to the pond has faded so much you wouldn't recognise it.
Their diet is quite varied with high quality food.
Water parameters are:
Ammonia: 0
Nitrite: 0
Nitrate: Currently 20 but usually lower.
PH: 8.2 (Stable)
KH: 8
GH Currently 13dH but usually 15-18dH
Phosphates: 0.25
Dissolved oxygen at 20C: 8 ppm.
GH (water hardness) is definitely very high but not much I can do about that and is the same water they had in the grow-on and no signs of pink there.
First time I've tested for dissolved oxygen so don't know if 8 mg/l is bad or good, but I think its a "pass".
Activated carbon maybe worth a try, its one thing I haven't yet tried.Last edited by RS2OOO; 04-06-2020 at 08:49 PM.
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04-06-2020, 11:00 PM #24
I have a predominately white fish doing exactly the same thing at the moment. I have treated Fluke solve after scraping another fish then a PP treatment speculatively and then another PP treatment after finding costia on the fish in question. He's stopped flashing but is still red and a little 'quiet'. So I've ordered some salt.
2660 Gallons. 4" Bottom Drain and Skimmer. Draco Solum 16 Drum. Anoxic Filtration. Air lift returns.
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04-06-2020, 11:46 PM #25
Mine are still in a 1000litre IBC, so probably going to salt the whole lot... Watched a youtube the other day of a Jap breeder. He reckoned do the whole pond between 0.3-0.5.% does that seem right or way off?
2660 Gallons. 4" Bottom Drain and Skimmer. Draco Solum 16 Drum. Anoxic Filtration. Air lift returns.
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04-06-2020, 11:57 PM #26
i was thinking the other day after having read that carp release somatostatin pheromones to inhibit growth of rival fish.
specifically in closed environments, and about how that might work as a mechanism.
https://pubmed.ncbi.nlm.nih.gov/9405121/
would it react with or against endocrine hormones in other fish, in a kind of silent chemical warfare?
and if it can prevent or slow a fish from growing, would those pheromones putting stress on a fish cause it pink up?
the pheromones also have a persistence in water that can build up.
though normal water changes would likely dilute them below a level where they would have an impact.
but in the absence of water changes, carbon would probably clean them up pretty well as they are organic compounds.
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05-06-2020, 12:05 AM #27
After your earlier post I bought 5kg of activated carbon. Can't hurt to give it a try as it won't do any harm as it does allegedly remove those growth restricting pheromones (or whatever they are lol).
But I also researched the subject and found an old post from Manky Sanke basically saying activated carbon is unlikely to do much, but you never know so I'll try it.
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05-06-2020, 12:06 AM #28
treating fish with salt if fine but ideally wants to be done in a separate pond.
mankey sankey's web site illustrates just how hard it is to get the salt out of a pond once you put it in.
Koi health
but if you do here's cuttlebrooks advise
https://cuttlebrookkoifarm.co.uk/whe...w-to-use-salt/
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05-06-2020, 12:13 AM #29
i'd agree it doesn't do much in a pond,
but i like to use it occasionally for any nasties that could leach into the pond, industrial fallout from rain fall, and especially after any treatment has finished to mop up left over chemicals.
it's also great at removing tannins and gives the water a polish making it very clear.
i've got 5litres of rowa carbon left over from when i had my marine tank,
and will be using it to give my water a detox and polish...if i ever get rid of these flukes
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05-06-2020, 12:15 AM #30
That level sounds fine to me, not for parasite removal but for easing stress.
A lot of people are against salt but I've always used and found it a good tool to have. Don't use it often, but have 50kg sitting around just in case (ultimately it usually ends up in the dishwasher)
In fact I should probably try another salt bath on mine, I just wonder if the whole stressful process of catching, bowling and administering a salt bath contradicts the benefits of the salt itself.
This is a great article about salt, a little bit of personal opinion here and there, but still probably the best article around:
Salt in the koi environmentLast edited by RS2OOO; 05-06-2020 at 12:17 AM.
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06-06-2020, 09:11 PM #31
A little bit more pink today. My fault.
Couldn't catch her to do a salt bath.
Made one attempt and she jumped 2 foot in the air and luckily landed back in the pond.
Made a 2nd attempt and she jumped 2 foot in the air and luckily landed back in the pond.
Worried about stressing her more so I gave up.
She's one of these that swims around with her dorsal out the water. I'm sure it's not sunburn but with her healthy behaviour and rapid growth it has to be considered over stress.
Sent from my Pixel 2 using TapatalkLast edited by RS2OOO; 06-06-2020 at 09:18 PM.
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07-06-2020, 09:21 PM #32
Salt bath for mine today. Finally went off his food and was flashing like mad again. Might need a better microscope!
I went for 0.5% (5ppt) initially for a few mins and he immediately calmed doewn, then I uppped to 0.9% (9ppt) and he stayed in there, seemingly quite happy for 20 mins.
I found this calculator very useful for figuring out how much salt to add.
https://www.hamzasreef.com/Contents/...Calculator.php
These are the patches of red and raised scales. Bacterial?
2660 Gallons. 4" Bottom Drain and Skimmer. Draco Solum 16 Drum. Anoxic Filtration. Air lift returns.
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07-06-2020, 09:38 PM #33
I don't know enough about the bacterial side of things to really know if that is the cause and/or the best way to treat.
So aside from bacterial (which I suppose would be a secondary issue caused by something else), it could be caused by any number of parasites, but costia in particular, or maybe ammonia burns if there's been a spike at some point.
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08-06-2020, 10:10 AM #34
Got to be the costia again. But it's just this one fish. If so it knocked it back each time but it's survived two PP treatments. He is flashing again already. Malachite Green and Formalin premix ordered with next day delivery. Fingers Crossed.
Last edited by Alburglar; 08-06-2020 at 10:21 AM.
2660 Gallons. 4" Bottom Drain and Skimmer. Draco Solum 16 Drum. Anoxic Filtration. Air lift returns.
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08-06-2020, 10:30 AM #35
Good luck with it al. I am adding right now.
Adding the fmg over one hour period.
First 1000 gallon fmg gone in. Another 4 to go. So roughly every 15 minutes.
I don t want to shock the fish. With it all going at one go.
Plus this way I know my tench orfs and Rudd can handle it.
I can t catch them to net them. They have come through it before. I ain't emptying the pond.
Fred
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14-06-2020, 07:00 PM #36
My Baby Shiro is still pink.
I scraped nearly all my Koi today and they were all clear of parasites.
I also scraped this pink Shiro along the pink area, around the Pec fin ball joint and from underneath the gills to the ventral fins. She was 100% clean.
But look at her skin in this picture, it is quite bad.
NOTE that I have edited the contrast/brightness/colour in this photo to show the pink and the veins more clearly. She doesn't look quite as bad as this in the flesh, but still she's clearly not right but doesn't act in any way stressed. Also the pink didn't fade at all on all the cloudy days we had last week, so I don't think its sunburn.
She measures just over 34cm so has grown since being put in the main pond, and she never shows any physical signs of stress in the pond, always eating loads etc and hanging around the feeding area all day. I gave her a heavy salt bath at 3 ounces per gallon (18 grams per litre) for 20 minutes.
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15-06-2020, 04:55 PM #37
Sounds ridiculous I know, ( but we're all allowed to be ridiculous at least once in our lifetime ...…….Right ) Anyway, she
wouldn't be having a reaction / allergy to something in the food she's eating, a bit like us ? I get a thumping headache if I eat
to much chocolate ( but that's my fault ) life can be so cruel
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15-06-2020, 05:28 PM #38
Ha ha, I got a thumping headache too, because I worked all day and didn't stop for food and drink! That's my fault too lol.
Love the suggestions and hope you keep them coming, but she's on the same food she was on in the grow on.
I bought 5kg of activated carbon and mesh bags as suggested by someone else here. Going to drop that in the pond next to see if it does anything.
Leaving it a couple of days first so I can monitor any improvements from the salt baths.
If anyone else put photos up of a koi in that condition I'd suggest water quality, parasites or possibly bacterial. I can rule the first 2 out completely. Don't know anything about the latter only that there's no reason why she'd get a bacterial infection within a day or 2 of being in the pond. She lived in the same pond water before with no issues.
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20-06-2020, 11:29 PM #39
90% less pink today.
Considering this problem has been ongoing for 2.5 Months, the 3oz per gallon salt bath last week must have helped because every day since she has been less pink.
She is still not perfect but this is the whitest I've seen her since being in the main Pond so I'm happy to leave her now. If she gets worse I'll do one more salt bath.
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21-06-2020, 12:07 AM #40
Nice one RS,
glad to see you've got it all sorted
she looks happier too
The Daily pond temp thread
Yep , forecast snow here ! Hoping so more money to be made gritting lol Sent from my SM-S918B...