TPF, sorry I have to agree with Cecil here. Look at the math I can dump thousand lbs of salt (they do this in aquaclture) in a 1 acre pond and see what the ppt level is. It is so diluate at that point then guess what its back to what it was prior. In fact many species of fish do well with a little salinity to the water. Salt is one of the best things around for fish health. We use it often for fish hauling and helping sick fish.
