Kay wrote:
Thanks for the feedback, there was a debate in the goldfish newsgroup
and the majority think snails are dangerious to thier goldfish. Due to
this link

http://puregold.aquaria.net/pg/disea...m#black%20spot

Well, this is a case of knowing where people are coming from. In the case
of black spot disease, it would be of concern to pond goldfish keepers,
because, being that ponds are outdoors, all the vectors required for the
disease (snails, birds, fish) are present. This is not a concern to the
indoor tank keeper, unless for some reason you have birds free-flying in
your home. It is possible that some goldfish keepers have experienced this
in their ponds, polarizing them against snails, even in situations were
there are no birds present. Note particularly that the page referenced
does not even mention the role birds play in the lifecycle.