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

Blizzanj

AC Members
Feb 7, 2009
36
0
0
Nebraska~ at the moment
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?
 
that's what I thought, thanks!
 
glass? razor blades help remove any calcium build up or red coraline algae.
 
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