Ionic silver as an ich treatment?

[Zoaelite]

Originally Posted by 425nm

For the love of your fish/coral STOP dosing a heavy metal that you can't measure!!

Silver is definitely toxic to freshwater fish (it inhibits the Na+/K+ and ATPase used by the gills in osmoregulation) and is probably toxic to marine fish let alone invertes.
On top of this its toxic at the range of 0.01-0.17MICROGRAMS/L of water. You can very very easily hit that level without realizing.

If you can't quantify it, don't put it in your tank (or your body).
Edit: I'm sure there's a good chance that it'll kill ich but also lots of other things in your tank.

Couldn't of put it better myself, do not dose something that you can not measure. You won't know if you don't try but you sure won't be happy if you kill your whole tank and have to start brand new.

I hope this photo puts something into perspective for you.