"Rodney Pont" wrote in message
s.com...
I've Googled but can't find anything specific so does anyone know if
salt at up to 0.3% will harm tadpoles?

We have been fighting something since last year and nothing much seems
to help.

It's a 700US gallon pond and had 25 goldfish, up to about 6inches long,
and a large green tench. During last summer they started to get
semicircular wounds on their bodies and one had it's face eaten away.
snip

Could this be damage from a predator?

BV.