Oh no! That's sad to lose both yoyos. I can't imagine they'd have eaten enough of the food to overdose themselves on levamisole, they are greedy food thieves but in my experience levamisole just makes everyone grumpy/sleepy. I haven't ever lost a fish after dosing it, and I was dosing it a lot to kill off camallanus worms. And I think the timing isn't right, a few weeks to die of poisoning? If it was poisoning it wouldn't have been from the food I don't think. Their systems would have had plenty of time to process and excrete the levamisole many times over. Really hard to judge what has happened when it doesn't affect everyone or there are no signs of illness. Did anything else change recently in your tank? Could they have scavenged something else that died, and caught a disease that way? I'm sorry for your loss.FranM wrote:Is it possible that Levamisole treated flake food could be the culprit in the deaths of all my yoyos over a weekend when clowns and silver dollars were not affected? The reason the flakes were fed was to treat a chronic problem with a skinny clown loach. The clown has not bulked up yet in the way I would like and seemingly healthy active and growing yoyos perished within a day and a half of each other a few weeks after a couple “as directed” feedings though they didn’t actually NEED the flakes. All fish followed the same regimen.
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