I live Toronto, and our tap water is fresh water, not salty. I talk for each LB of bivalvia like clams mussels.
How much tap water?
How much salt to add?
What g of salt per LB NEVER to outstrip? What concentration kills them?
For pics, pls see After purge mussels 6 time in salt water 20 mins each, why they still exude much grime?