Help me fix my batteries?

[Trick440]

Man I have bad luck with lipos. These where in my basement, my saltwater fish tank had an issue and drained about 40 gallons of saltwater on the floor where I had these lipos. It even bleached my brown carpet, probably from the acid. I'm lucky it didn't start a fire.

As you can see there is alot of corrosion on all the connectors even the balancer tap. Is there a way to clean this?