is there ammonia in the salt?????

[Myka]

Only if you do the test I suggested above and find out that it's the bin that's causing the problems. If it's the salt, then putting a liner in there won't do a darn thing.

In the meantime, buy some SeaChem Prime to add to your waterchange water. It detoxifies ammonia (as well as heavy metals and nitrite I think).

What brand salt is it?