ok, i had a 55 gallon tank that sprang a leak. So we had to go out and get a new 125 gallon. But the problem is that the previous owners had it set up as a salt water tank. I have scrubbed the the entire tank down and the sub tank. But there there is still some dried salt and grime on the water pump and tubes in the tank. Will this cause problems for my freshwater fish??? they are a green sunfish, oscars, channel cats and my pride and joy red tail catfish '' bruiser".. thanks nate