I’ve run out of salt. Can I buy some from the grocery store or must it be aquarium salt? I know I can’t use any regular table salt but I forgot what kind I can get away with. My car is in the shop and the only store I can get to is the grocery store.The 3 ppt salinity is the "minimum to kill ich".
50 tsps is still about 1/3rd to little, to actually do the job for 25 gallons, especially on a heavy case.
Ich is a tough parasite, with a tough outer cell membrane, and what you are trying to do with the salt, is create enough osmotic pressure to make their outer cell membrane implode. Even a few tsps too little and most will escape the implosion, 25 less is like giving them a scratch.


