Is there any problem with buying a used tank that has been used as a saltwater tank?
I am still looking for a used 75 gal tank the last one didn't work out. I see another one posted on craigslist that has probably been used for saltwater. Provided I clean it well are there any concerns about buying a used saltwater tank?
Nope, no concerns as long as you wash it out well. Most of us use AQ salt for our fish when they get ill anyways, so a few grains of salt won't hurt a freshwater fish. Just remember to wash it out well!