Brew12
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My Tank Thread
@HotRocks Is there a level of copper that kills tomonts (no matter how unsafe for fish)?
I'm not sure there is a level. At one point I came across a study that showed Tomonts may not be killed after 20 to 24 days in copper but that they will be rendered unable to reproduce. Unfortunately, I haven't been able to find that study again so I don't have all the details. I believe this phenomena is why so many people have been successful doing a 30 day treatment since we know tomonts may take 60+ days to hatch.Not that I am aware of, although I do believe I remember reading somewhere a post by @Brew12 that was linked to a write up about copper damaging tomonts. Bleach will safely destroy anything unwanted though if you are looking for a way to sterilize a tank free of parasites and bacteria.
I do agree that bleach is a much safer option that dumping in a bunch more copper.