Just bought a 20 gallon that used to be a saltwater aquarium

[Blizzanj]

I just bought an aquarium off craigslist and it appears to have been used as a salt water aquarium. How do I clean it to make sure it's safe for my freshwater fish?

[rich311k]

Vinegar, water and elbow grease.

[acevudoo]

ya, what he said...

[Blizzanj]

that's what I thought, thanks!

[KarlTh]

Just hose it out a couple of times. The amount of salt left will be negligible.

[Star_Rider]

glass? razor blades help remove any calcium build up or red coraline algae.