Hello, I'm new to this forum, glad to be here.

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I've had a koi pond for a couple of years now. The other day I noticed two of the fish were scraping on the bottom of the pond, a sign I've always taken as an indication of a parasite infestation. However, the water temp is just above freezing, and I have an 11watt UV lamp in my filter. The water is clear and is a quarter decanted every month. I have just bought some anti-parasite treatment (not used yet) but my local aquarist tells me that the treatment is ineffective at low temperatures and that parasites are unlikely in such cold water. Does anyone have any experience with pond parasites? Any advice would be gratefully received, thank you. (I have included a picture of the tail of one of my koi with what appear to be white spots.)
 

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sissy

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Welcome and outside temps are not what to think about ,you need water temps .Do you have a liquid test kit
 

addy1

water gardener / gold fish and shubunkins
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Welcome to our forum. I don't have koi, but there are a lot here that keep them. They will help you.
 
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That does look like koi pox - @Dave 54 will pop in here and confirm. If that's the case, no treatment is necessary - it's not deadly, just unsightly.

Welcome to the GPF!
 
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welcome to the group! :)
 
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WElcome to the best pond forum. Honestly, they are all super friendly here, lots of folks are on chatting often, multiple times a day. I’m on a few other forums for various topics, this is by far the friendliest.
As for you folks in the UK, at least you weather is average for the season. I get 60s one day, then freezing the next. Like Mother Nature isn’t sure if she wants early summer, or late winter here.
 
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welcome Chris, one of my GF has it as well
Seems like it doesn't bother him/her and I'm hoping for a full recovery when I start up the pond in the Spring
 
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JamieB, I started to say that it sounded like you were describing the weather in North Texas, but North Oklahoma is not too far away is it neighbor?
 
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Nope. I travel to Texas, mostly midland, Odessa, area, for work on occasion. We do get a bit chillier up here, more rain, and I’ll be going to San Antonio around mid month to help a friend, so it’s not that far away.
 
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