I hope this finds everyone well.
It's been a while since I posted about this problem (June) and I thought it had cleared up.
We have a 30 litre biorb which has been set up for years. We regularly get the water checked and it's only in the last week we've had any issues with - ammonia levels we're very slightly raised.
We are based in West London where the water is hard. 272 ppm calcium carbonate according to Thames Water website.
We had 6 guppies and 7 neons. A couple of weeks ago we noticed that the guppies were showing signs of what we think is camallanus worms. Thin red cotton like things protruding from the anal vents. Some of had around 5 of them. We've lost 4 fish whilst we've been treating the water with a liquid provided by Maidenbead Aquatics. It has an active ingredient of flubendazole 1000mg/100ml. Dose is 1ml per 50 litres, so we've been introducing 0.6ml into the tank.
We've tried 2 doses now (cleaning tank, carrying out a 70% water hange in between) but the worms are still present. Water temperature was 23/23, but we advised to slowly increase the water temperature up to around 28 which would be fine for a few days.
Also tried soaking food in a diluted medicated solution as per other advice, but nothing seems to be getting rid of the worms.
The 2 remaining fish and pooping like it's going out of fashion, but they are passing the worms with it.
I'm out of ideas, so if any one can suggest anything, that would be greatly appreciated.
Attached are photos of worms that pulled out of one of the dead fish. I'll try and get photos of the living ones.
Thanks all.
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