by Linda on Fri Nov 04, 2005 6:23 pm
Hi Alan, I know what you mean about the weather, but we're heated to 21 degrees so no temp fluctuations to worry about. We had a minor fluke outbreak on one koi about 3 months ago, a fairly new 20 cms koi, we treated the pond with Paradex (x3) instead of supaverm (which would have meant moving the Sturgeon) and thought we had the situation sorted. We did follow up scapes but only on the original fish - she was clear. 6 weeks ago we lost our oldest koi, who was 15 years old - she'd come from my mums pond a couple of years ago. We thought she'd gone of old age and didn't worry too much at all. We did do another scrape of the 1st koi who had had the fluke infestation and were most pleased with her progress. An ulcer by her gill had required antibiotics, but was slowly but surely healing nicely. The two koi we lost earliier this week were big ladies, 60cm & 62cm long, we'd had them a year and they seemed very robust and were certainly not the ones I'd have worried about! We heated last winter so they had put on steady good growth. We were going to winter them this year (lower temp) and had just last week been discussing bringing the temp down over the next few weeks. The new NTL labs BDS treatment is supposed to be a single dose treatment, they say only retreat after 10 days if fish do not respond to 1st treatment. We're going to be bowling every fish this weekend, taking scrapes and examining them all over for any wound sites and deciding on any individual treatment regime if necessary.
If there are any wounds which require topical or antibiotic treatment then the heat will go up not down to aid healing. This BDS one treatment does sound a bit too easy. Following the Paradex, I think we should have checked more koi each week for say 6 weeks following the first fluke infestation. We have certainly paid for not doing so. The fish lost were quite expensive purchases. The BDS treatment is £36 for our 6500 gals, which is a bit cheaper than the 3 bottles of Paradex. If this doesn't work we'll have to go down the superverm route. Only problem with that is I really don't want to have to put the poor sturgeon back into the goldfish pond. He's huge now- over 3ft long.
You do need a microscope to see the flukes Alison. I've a mini video of them which I'll see if I can upload or find a link to. If it wasn't so bad for the fish, they're quite interesting.
Lucy is up and down.. I've arranged dog sitters for next week as I'm working away a bit. I'm taking each day as it comes with her and as long as she's not in pain then will wait and see. No further attacks, but she's not gone any further than toileting just outside the back door, then a nibble of food then back to sleep. Passing away in her sleep would be my wish for her.