Value of a used system

Try living in North Dakota and finding a tank on Craigslist or in the paper for a decent price! lol

My brother lives in Washington State and finds great deals on Craigslist all the time while the paper here sells a used 20 gallon with stand for 200.00!!! Do you know what size tank he can buy in Washington for 200.00?
 
AquariaCentral.com